BSOD in the middle of web browsing & once on startup

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McAfee is a frequent cause of BSOD-s, consider uninstalling it with the McAfee Removal Tool and replace with Microsoft Security Essentials (To test)

• How to uninstall or reinstall supported McAfee products using the Consumer Products Removal tool (MCPR)
  
  • McAfee Removal Tool - McAfee Uninstaller

Is anything connected to the USB ports? Remove if so.

Microsoft Security Essentials.

Recommended from a strict BSOD perspective, compatibility & stability compared to other antiviruses/internet security software. It is free and lightweight:-

• Microsoft Security Essentials - Free Antivirus for Windows
  
  • Malwarebytes - Free
    
    • Good and Free system security combination.

Do not start the free trial of Malware Bytes; remember to deselect that option when prompted.

Run a full scan with both (separately) once downloaded, installed and updated.

* Update all network drivers.

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Perform a System File Check:

• Click on the
• Type CMD on Search
• Left click and Run as Administrator
• Type SFC /scannow

Full tutorial here:

• SFC /SCANNOW Command - System File Checker

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Reduce items at start-up. Nothing except anti-virus is required:

• Startup Programs - Change
• Troubleshoot Application Conflicts by Performing a Clean Startup

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Disk Check on your hard disk for file system errors and bad sectors on it:

• Disk Check

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Install latest drivers for your video card:

Code:

Driver	c:\windows\system32\drivers\atikmpag.sys (8.14.1.6257, 321.00 KB (328,704 bytes), 8/13/2012 4:39 AM)

METHOD:

Click on the Start ► Control Panel ► Programs ► Uninstall a program ► Uninstall everything related to; ATI and reboot the system. Delete remnants of its drivers/older drivers using Driver Fusion/Sweeper

Link for latest driver: AMD Driver Autodetect

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Check if enabling or disabling USB Selective suspense helps:

• USB Selective Suspend - Turn On or Off

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If this does not provide stability. Test RAM.

Take memtest. Run for 8 passes and test each stick in a know good slot for an additional 6 passes.

• RAM - Test with Memtest86+

The goal is to test all the RAM sticks and all the motherboard slots.

Check your motherboard manual to ensure the RAM sticks are in the recommended motherboard slots. Some motherboards have very specific slots required for the number of RAM sticks installed.

If you get errors, stop the test and continue with the next step.

1. Remove all but one stick of RAM from your computer (this will be RAM stick #1), and run Memtest86 again, for 7 passes.

*Be sure to note the RAM stick, use a piece of tape with a number, and note the motherboard slot.

If this stick passes the test then go to step #3.

2. If RAM stick #1 has errors, repeat the test with RAM stick #2 in the same motherboard slot.

*If RAM stick #2 passes, this indicates that RAM stick #1 may be bad. If you want to be absolutely sure, re-test RAM stick #1 in another known good slot.

*If RAM stick #2 has errors, this indicates another possible bad RAM stick, a possible motherboard slot failure or inadequate settings.

3. Test the next stick of RAM (stick #2) in the next motherboard slot.

*If this RAM stick has errors repeat step #2 using a known good stick if possible, or another stick.

*If this RAM stick has no errors and both sticks failed in slot#1, test RAM stick #1 in this slot.

4. If you find a stick that passes the test, test it in all the other motherboard slots.

If Part 2 testing shows errors, and all tests in Part 3 show errors, you will need to test the RAM sticks in another computer and/or test other RAM in your computer to identify the problem.

In this way, you can identify whether it is a bad stick of RAM, a bad motherboard, or incompatibility between the sticks.

   Information

Errors are sometimes found after 8 passes.

   Tip

Do this test overnight, before going to bed.

Post back results.

Take your time :)

Any update?