Directives to Use Mac’s Safe Boot Feature

Sometimes your Mac computer shows problems even if it’s one day old. Although most of you may be fortunate that your Mac is running fine for years without causing any serious problem and there is no difficulty to start it up. But sometimes you may struggle with your machine if it refuges to finish booting and you’re against a deadline to finish of some crucial work.


So here are a few important tips which may help you to solve your issue and make your Mac work again. These points include the solution of some general and address specific problems. But before moving forth, it’s advised to create a backup of all your data and then apply your steps for fixing the issue.

Apple has offered a Safe Boot (also referred as Safe Mode) option ever since the launch of Jaguar (OS X 10.2.x). Safe Boot enables the Mac to start up with the least system extensions, preferences, and fonts it needs to run.

Safe Boot is an option that make the Mac run again when any problem encounters caused by corrupt apps or data, damaged fonts or preference files, and software installation issues. In most of the cases, the issue you may experience is either a Mac computer which can’t boot completely and freezes at some instants along the way to the desktop, or a Mac which boots successfully, but as soon as you undertake specific tasks or use specific applications it freezes or crashes.

Safe Boot and Safe Mode

Both these terms may sound similar and most of the users think that both mean same. Technically, they’re different and can’t be interchanged, but most of the people don’t care while using them. Both define different operations and situations like Safe Boot is the process of forcing your Mac computer to start up using the bare minimum of system resources whereas Safe Mode is the mode your Mac machines operates in once the Safe Boot is complete.

What Happens while a Safe Boot?

A Safe Boot will do the following while the startup process:

  • Carry out a directory check of your startup drive.
  • Load only the bare minimum of kernel extensions OS X which are required to run.
  • If there is any other located at /System/Library/Fonts disable them all. Because sometimes it may be possible that third-party fonts are causing issues so enable only those fonts that are supplied by Apple.
  • Move all other font caches to the trash.
  • Disable all login or startup items.
  • A dynamic loader cache (OS X 10.5.6 or later) can cause problems like a blue screen freeze at startup, so, deleting it can fix problems. 

Some Features Will Be Missing

Once the Safe Boot is finished, and you’re at the Mac desktop, your system will be operating in Safe Mode.

But remember that not all Mac OS X features operate in this special mode. Specifically, the following written capabilities will either won’t work at all or be limited.

  • DVD Player may not work.
  • iMovie may not be able to capture video.
  • Devices connected to the audio in or audio out may not function.
  • Internal or external modems may not operate.
  • AirPort cards may not work and this depends on which version of the OS and the card is in use.
  • Quartz Extreme can’t run. Applications that use Quartz Extreme features, like translucent windows, may not work properly.
  • Network file sharing will be disabled in the OS X 10.6 and later versions.

How to Initiate a Safe Boot and Run in Safe Mode

Do the following to Safe Boot your Mac with a wired keyboard:

  • Shut down your Mac computer.
  • Press and hold the shift key.
  • Start up your Mac machine.
  • Release the shift key once you see the desktop or the login window.

Do the following to Safe Boot your Mac with a Bluetooth keyboard;

  • Shut down your Mac machine.
  • Start your Mac computer up.
  • When you hear the sound of your Macs startup, press and hold the shift key.
  • Release the shift key once you see the desktop or the login window.

You can troubleshoot the issue you are having with your Mac running in Safe Mode, like by deleting an application that’s creating problems, launching Disk First Aid and repairing permissions, or removing a startup or login item that’s causing issues.

How to Troubleshoot Kaspersky Anti-Virus Error Code 502

Kaspersky 502 error encounters because of corrupt download or incomplete installation of its anti-virus software. There is any issue with the Windows registry or your system is already under the influence of severe malware and infections, or there is already an anti-virus program running onyour computer, or some other application has meticulously removed Kaspersky anti-virus related files.


Your system shows following symptoms if error 502 encounters:

  • It appears and crashes all the running applications
  • While installing Kaspersky program, it crashes the PC
  • Computer freezes periodically
  • It executes the inputs with a delay and responds significantly slow

This error may appear while installing a any software program while a Kaspersky Lab-related program is running, or during installation of the Windows operating system, or while Windows startup and shutdown. To troubleshoot the problem, it’ll be helpful if you track that when the error 502 encounters because it contains a crucial piece of information.

Please note that these instructions are applicable for Windows 10/8/7/Vista/XP/ME/2000

Below troubleshooting instructions are enlisted to resolve the issue. Progressively these steps become complex and time taking so it’s better to attempt them in ascending or in order to save your time and efforts.

Step 1: Repair Registry Entries Associated with Error 502

 It’s not safe to edit the Windows registry manually to remove invalid Error 502 keys unless you are an expert PC service professional. Because if you incorrectly edit your registry, your PC may stop functioning and bring irreversible damage to its operating system. It’s so sensitive that even one misplaced comma can prevent your computer from booting entirely.

So to ward off this risk, it’s better to use a trusted registry cleaner to scan and repair any Error or 502-related registry problems. Because such tools automates the process of finding invalid registry entries, broken links within the registry and missing file references. They create an automatic backup before performing scan function with the ability to undo any changes in a single click along with providing you the protection against the possible PC damage. Moreover, they also include the advantage of improving computer speed and performance.

If you want to continue with the manual process, the very first thing to do is create the backup by exporting a portion of the registry related to Error 502 (eg. Kaspersky Anti-Virus) then follow the instructions:

  1. Click the Start Menu icon.
  2. In the search box, type “command” and don’t press ENTER yet!
  3. While holding CTRL+Shift key on your keyboard, press ENTER.
  4. It’ll prompt a permission dialog box.
  5. Click Yes.
  6. Now a black box will open with a blinking cursor.
  7. Type “regedit” and press ENTER.
  8. Select the Error 502-related key (eg. Kaspersky Anti-Virus) that you want to back up in the Registry Editor.
  9. Select Export from the File menu.
  10. In the Save In list, choose the folder where you want to save the Kaspersky Anti-Virus backup key.
  11. Type a name for your backup file in the File Name box, such as “Kaspersky Anti-Virus Backup“.
  12. Make sure that “Selected branch” is selected in the Export Range box.
  13. Click Save.
  14. The file is now saved with a .reg file extension.
  15. Now you have created a backup of your Kaspersky Anti-Virus-related registry entry.

Step 2: Perform a Full Malware Scan of Your PC

It may be possible that your 502 error could be the aftermath of a malware infection on your PC. Because malicious programs, hackers and cyber intruders can damage, corrupt, or even delete Runtime Errors-related files.

Step 3: Clean Out the Junk Files from your System (Temporary Files and Folders)

Computer accumulates junk files from your normal web surfing habits and computer usage. These junk files cause the system to perform slow and run sluggishly so you need to clean out it occasionally because it not only fix kaspersky 502 error, but can also dramatically speed up the performance of your system.

Disk Cleanup (cleanmgr) is a Microsoft’s tool to remove junk entries from the system. Follow the steps written below to run Disk Cleanup (cleanmgr) (Windows XP, Vista, 7, 8, and 10):

  1. Click the Start Menu icon.
  2. In the search box, type “command” and don’t press ENTER yet!
  3. While holding CTRL+Shift key on your keyboard, press ENTER.
  4. It’ll prompt a permission dialog box.
  5. Click Yes.
  6. Now a black box will open with a blinking cursor.
  7. Type “cleanmgr” and press ENTER.
  8. Disk Cleanup will start calculating occupied disk space on your computer.
  9. The Disk Cleanup dialog box will show up with series of checkboxes from where you need to select the “Temporary Files” category in most of the cases because it occupies the most disk space.
  10. Also check the boxes of the categories that you want to clean and then click OK.

Step 4: Update the Device Drivers of Your Computer

502 errors can be related to outdated or corrupt device drivers. Drivers may stop working suddenly even if they were working fine yesterday and there may be different reasons of that. So updating the device driver can also solve the Error 502 problem.

Finding the exact driver for your Error 502-related hardware device may be extremely complicated and time consuming. But installing the wrong or an incompatible version of the right driver may make your issue even worse.

Although it is not obvious that your Error 502 is related to hardware driver problems, but it’s better to ensure that all of your PC device drivers are up-to-date to maximize PC performance and ward off the unusual issues.

Step 5: To “Undo” Recent System Changes, Utilize Windows System Restore

To offer you help for resolving the Error 502 problems, Windows System Restore allows you to “go back in time” with your PC. It may return your computer’s system files and programs back to a time when everything was working smooth. It may be helpful to avoid hours of troubleshooting headaches related with 502 errors. And also mind that using System Restore will not affect your documents, pictures, or other data.

To use System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Click the Start Menu icon.
  2. Type “System Restore” in the search box, and press ENTER.
  3. Click System Restore in the results.
  4. If prompted provide any administrator passwords.
  5. And further, follow the steps in the Wizard to select a restore point.
  6. Restore your computer.

Step 6: Uninstall and Reinstall the Kaspersky Anti-Virus Program Associated with Error 502

If error 502 is related to a specific program like reinstalling Kaspersky Anti-Virus-related software, uninstall the program installed earlier.

Instructions for Windows 8:

  1. To produce the Start Menu image, hover the cursor in the bottom left of the screen.
  2. Right-Click to open up the Start Context Menu.
  3. Click Programs and Features.
  4. Under the Name column, Locate Kaspersky Error 502 associated program (eg. Kaspersky Anti-Virus).
  5. Click on the Kaspersky Anti-Virus-associated entry.
  6. On the top menu ribbon, click the Uninstall/Change.
  7. To complete the uninstallation of your Error 502-associated program, follow the on-screen directions.

Instructions for Windows 7 and Windows Vista:

  1. Click the Start button and open Programs and Features.
  2. On the right side menu, click Control Panel.
  3. Click Programs.
  4. Click Programs and Features.
  5. Under the Name column, locate Kaspersky Error 502-associated program (eg. Kaspersky Anti-Virus).
  6. Click on the Kaspersky Anti-Virus-associated entry.
  7. On the top menu ribbon, click the Uninstall button.
  8. To complete the uninstallation of your Error 502-associated program, follow the on-screen directions.

Instructions for Windows XP:

  1. Click the Start button and open Programs and Features.
  2. Click Control Panel.
  3. Click Add or Remove Programs.
  4. Under the Name column, locate Kaspersky Error 502-associated program (eg. Kaspersky Anti-Virus).
  5. Click on the Kaspersky Anti-Virus-associated entry.
  6. On the right side, click the Remove button.
  7. To complete the uninstallation of your Error 502-associated program, follow the on-screen directions.

Now reinstall the program according to the Kaspersky Lab instructions after successfully uninstalling your Error 502-associated program (eg. Kaspersky Anti-Virus).

Step 7: Run Windows System File Checker (“sfc /scannow”)

Windows systems have System File Checker which is a handy tool which allows you scan for and restore corruptions in Windows system files (including those related to Error 502).

To run System File Checker (Windows XP, Vista, 7, 8, and 10):

  1. Click the Start button icon.
  2. In the search box, type “command” and don’t press ENTER yet!
  3. While holding CTRL+Shift key on your keyboard, press ENTER.
  4. It’ll prompt a permission dialog box.
  5. Click Yes.
  6. Now a black box will open with a blinking cursor.
  7. Type “sfc /scannow” and press ENTER.
  8. System File Checker will start scanning for Error 502 and other system file errors (the system scan may take a while so be patient).
  9. Follow the on-screen commands to complete the process.

Step 8: Install all Available Windows Updates

Microsoft keeps on updating and improving the Windows system files so installing all available updates may solve your issues associated with Error 502. Sometimes just doing so can be a tool to fix your Runtime Errors problems.

Follow the steps below to check for Windows Updates (Windows XP, Vista, 7, 8, and 10):

  1. Click the Start button icon.
  2. In the search box Type “update” and press ENTER.
  3. Now the Windows Update dialog box will appear.
  4. If updates are available, click the button Install Updates.

Step 9: Conduct a Clean Installation of Windows

Before conducting this step, remember that reinstalling Windows will be a very time-consuming. It’ll alter all the changes that you made and you may lose your data so take the backup to avoid such loose.

It’s the final step to solve the issue which will allow you to start again with a fresh system after cleaning out all junks that have been accumulated over the normal usage of your computer.

If 502 errors still persist after a clean install of Windows, it may be possible that there is some serious hardware issue in that case it is likely that you need to replace the associated hardware resulting the 502 error.

How to Install (Direct Download) OS X El Capitan on Mac

It’s a matter of no doubt that the OS upgrade is highly recommended because it greatly improves the performance of Macs. Installing OS X EI will also do so provided they are capable of running Yosemite. While installing this version, you may come across some interruptions and issues. If this happens in your case also, in most of the cases, you need to restart it all over again.


Although you can’t download OS X El Capitan official from any other site other than the Mac App Store. So here is a reliable workaround for those who are experiencing similar problems with the OS X upgrade.

Installing El Capitan

While downloading OS X El Capitan through the Mac App Store, a raw package (.pkg) file gets downloaded from the Apple server. MAS process this file to download it and then convert it into an executable (.app) file, while downloading the package.

Start with downloading the raw package directly from the Apple server with the help of an appropriate manager. Because it will minimize the risk of download errors and speed up the download process. Then configure the system and customize its settings in such a way that the MAS download and install the latest version of OS X from the locally downloaded raw package, not the one version available on the Apple server.

At the end of the download, the result will be the same as you would get if you had downloaded OS X El Capitan directly from MAS. This only thing has been performed to skip the annoying download disturbances which cause the slow download speeds.

Just follow the below mentioned instructions to make a successful OS X El Capitan [Direct Download] download:

The very first step to start the process is, download the El Capitan package (.pkg) file from the Apple server with the help of a suitable download manager. Also ensure that the version you’re downloading is the latest version of El Capitan which has been released on the MAS prior to download the package.

You need to configure your Mac once you have got the raw package (ftk3252456602304584541.pkg), because the MAS use your Mac as the source for downloading OS X El Capitan. To do so, first of all you have to edit the hosts file and point the root domain of the download URL ( to localhost ( Follow the steps below, to modify the hosts file as required:

  1. Open Terminal from the Applications list or Launchpad.
  2. Type “sudo nano /etc/hosts” and click the return key. You’ll be asked to enter your password, input your admin password. Now the hosts file is open in editable mode within the Terminal window.
  3. To the end of the file, add the following line: “”.


  1. Press control + X (^X), then Y and click on the return option to save the file and return to Terminal prompt.

It’ll point the root domain to localhost IP of your computer.

Important Note: Sometimes, for the changes to take effect, you might need to flush the DNS cache. Type “sudo killall -HUP mDNSResponder” in the command line and click on the return option to flush DNS cache.

Next, you have to replicate the path of the source package on your machine in the same way as it is delineated in the original URL. Only then, the MAS will be able to download the package from localhost server.

You need to build the same directory structure on your system within a specific folder, and then assign that folder as the root of the localhost server to replicate the original download URL on localhost,.

Important Note: Python id preinstalled in OS X, which natively includes a SimpleHTTPServer by default. This server may turn any directory on your Mac computer into a web server directory (on localhost).

For instance, create a folder named “osxapps_local” on the Desktop, and delineate the directory structure of the package URL under it. Follow the below written steps to create the directory structure and, then host “osxapps_local” as the root directory on localhost.

  1. Open Terminal from the Applications list Launchpad.
  2. To enter the Desktop folder, type “cd Desktop” on the command line and click on the return button.
  3. To create the root directory of the same name on the Desktop, type “mkdir osxapps_local” and click on the return option.
  4. Type “cd osxapps_local” and hit return to go to the newly created folder.
  5. Enter the following command: “sudo mkdir -p ./apple-assets-us-std-000001/Purple3/v4/74/d2/82/74d28291-9db9-7ae2-305d-9b8b3f5fd463/” to create the relative path inside the root folder. Type the admin password when prompted for the password.
  6. Copy the source package (ftk3252456602304584541.pkg) file which you have downloaded before and paste it in the last folder of the directory tree that was created within the root folder. Click on Authenticate when prompted, and enter the system admin password.
  7. The Terminal prompt points to the root directory inside Desktop. Now, you have to host this folder on localhost and in order to do so, run the following command in the Terminal prompt: “sudo python -m SimpleHTTPServer 80”. Enter the admin password and click on the Allow option when the the subsequent message prompt. It’ll start the localhost server in the Terminal window, and do not close the terminal window until the process is not over.


Enter the URL of the original package in your browser to check the status of the local server setup, and it’ll also help you to check the download speed. The speed will be high because it is downloading from the localhost server.


Now, launch the Mac App Store and install OS X El Capitan in general way. Now the MAS will download it at a high speed from the local server. You may proceed with the installation once the download is complete by clicking on Continue button while the setup launches.

Important Note: During the installation process, your Mac may request resources from the “” domain. Thus, it is recommended to remove the entry from the hosts file before proceeding with the installation.

Is this method Genuine or not?

You might be thinking if this workaround to install OS X El Capitan is genuine enough or not. Have trust bacause it’s as genuine as the official method. Because here you’re downloading the same raw package that Mac App Store requests while downloading OS X El Capitan. You are using MAS to convert the raw package into the executable app file. The only difference between the two methods is the location of the raw file that Mac App Store downloads from (localhost instead of Apple server).

Mac App Store downloads the update from a distinct URL, and there is only one directory structure (with only one file in it) which you have replicated on the localhost server. You’ll not be able to download the package from localhost if Mac App Store’s target URL did not match the relative path on localhost. You may verify its build number (15A284) by clicking on “About This Mac” from the Apple Menu once El Capitan has been installed.

Additionally, for the original disk image file (InstallESD.dmg) found within the processed OS X El Capitan app package, there have been MD5 and SHA1 hash values provided so that you can erify the authenticity of the file using its MD5 or SHA1 (provided below) if you want to download the raw package (ftk3252456602304584541.pkg) from alternate sources, such as torrents.



SHA1: 5e21097f2e98417ecc12574a7bb46a402594ea4a

MD5: d54b388282228df41f40e95649e8bc32


SHA1: 8ff3e26ec16aece573b3cea680b0df67f85ccd8a

MD5: f46f412a5a74b0122ac1a317d604758a

El Capitan – Single Download Multiple Installations

If you or any of your friends has already downloaded the raw package on any other device, you can simply upgrade to El Capitan using the above method. For that you just need to copy the file to your own Mac. Moreover, you can directly use the processed app package created by Mac App Store on a single device, to install El Capitan on other devices if you have multiple Macs registered with the same Apple ID.

Once MAS has completed downloading the setup, go to the Applications folder and take a backup of the “Install OS X El” file. Copy the file to the Applications folder of that computer and double click it to run the setup to install El Capitan on other Macs registered with the same Apple ID. From the installer app package, you may also create a bootable USB installer for OS X El Capitan.

Update the Latest Version of Windows 10 on Your HP PCs

Just like any other Windows update, the Fall 2015 Windows 10 update is consigned to your computer through Windows Update. This article narrates what happens if Windows installs the Fall 2015 Update automatically, and instructions are given for manually installing the Fall 2015 Update.


The following steps written below shows what happens if Windows Update automatically installs the Fall 2015 Update to your system.

Important Note: Windows users are allowed to reset delays the update schedule up to five days, but there is a limitation that you can only apply this reschedule option once.

  1. The login screen opens when you use your computer first time during the day.
  2. A screen opens with a Hi message after you log in, followed by a order of screens that show the progress of the installation
  3. A Let’s start screen displays, when the installation is complete, and then your desktop opens.

The latest version has been installed successfully.

Steps to perform a manual install

Use the following steps to find the update in Windows Update if you don’t wish to wait for Windows to automatically download the Fall 2015 Update.

  1. Search for and open Windows Update in Windows.
  2. Click Check for updates.

 Important Note: The Fall 2015 update will not display if you have upgraded your computer to Windows 10 within the previous 30 days. You are not allowed to install the Fall 2015 update until you have exceeded the 30 days. You can uninstall Windows 10 upgrade in this waiting period, if necessary.

The download process starts and the progress bar tells the percentage of completion.

The new release name reflects in the Windows Update window when the download is complete along with the following restart options.

  1. Click the button next to We’ll schedule a restart to allow Windows to select a restart time. Select a time when you usually don’t use your computer.
  2. Click the button next to Select a restart time to select your own restart schedule, then choose the time and day for the restart.
  3. If it is fine to restart your computer now, click Restart now option.

A Configuring update for Windows 10 screen opens when your computer restarts, and it shows the percentage of completion.

When an Updating Windows screen opens, it shows the percentage of completion and tells the status of the processes like Installing features and drivers, Copying files, and Configuring settings.

Your computer restarts and the Windows login screen opens once the download is complete.

Issue with HP Recovery Manager

Important Note: HP Recovery Manager will not work with the Fall 2015 Update if your computer shipped with Windows 10 pre-installed at the factory.

Specifically, a Can’t open file: X:\sources\Recovery\tools\HP\Rita-tool\ message appears in case you try to open HP Recovery Manager using either of the following methods:

  1. Pressing the F11 key> clicking Troubleshoot, and then selecting HP Recovery Manager


  1. Searching for and choosing HP Recovery Manager, and then clicking Windows Recovery Environment

To fix this problem, download and install one of the following HP software updates:

  • Download HP Recovery Manager Update SP74123 for notebook computers
  • Download HP Recovery Manager Update SP74124 for desktop computers,
  • Download HP Recovery Manager Update SP74138 for business notebook or desktop computers

How to Settle the Issue if Mac App Store not Working in OS X Yosemite

Have you upgraded your Mavericks to OS X Yosemite on your MacBook Pro, MacBook Air, or iMac, and it has made your system critical for you? Are you facing a problem because your Mac App store not working completely in OS X Yosemite or it’s showing blank pages in Yosemite? Many of the Mac users have stated a problem about Apple Mac app Store that it’s not working in OS X Yosemite.

mac app store

Usually users face this issue after they Click on the OS X Update button. , Actually this is a kind of bug which causes this problem. It’s a very puzzling situation that you can’t access your App store on the device, because in such situation you will not be able to download by required apps on MacBook Air, MacBook Pro or iMac. So there is a need to solve this issue.

If your Mac app store becomes unresponsive, you can’t download several Good software programs, Utility apps and many more on your own Mac computer. There are two possible solutions explained and one of the two may resolve your concern if your Apple Mac app store not working in OS X Yosemite (10.10).

Solution 1

The issue may be because of Third party NTFS software on Mac or Connected partitions with versions of Microsoft Windows which includes NTFS file system. You may resolve it through below written steps:

  1. Choose the Apple menu
  2. Select the option “System Preferences’.
  3. Choose the option “View menu” and select “Spotlight”.
  4. Click on the Privacy tab, then click on the “+” Sign to add your NTFS system, partitions or connected devices.From the folder selection pan, select your BOOTCAMP partition or drive from the sidebar if you’re using Boot Camp, then click choose to deter this issue from occurring again.

There are a few third-party NTFS Software’s which have their own System preferences that will also allow you to execute the Similar action as using the Privacy tab of the Spotlight preferences, or it will give you the permission to temporarily disable them.

Once you exclude the connected NTFS resource in the Spotlight preferences, the Mac App Store will become responsive when you click the Updates icon.

Solution 2

Otherwise, you may downgrade your Mac OS until the issue doesn’t move off.