Random BSODs during normal work

[cocolino]

Hi,
I'm using my laptop (ThinkPad L512) from 1,5 years and since end of January this year I regularly got BSODs during normal work. There were about 15 of them until now. The only thing that I noticed and think could be useful is that I had about 3,4 of them just after unplugging external monitor. The other ones seems to appear without any specific circumstances (with or without external monitor plugged in).
If you need more infos to solve this problem, I'll do everything needed to get rid of this problem.

 

[koolkat77]

Welcome to Seven Forums.

Very weird pattern of your errors. Lets start with a few basics.

It does not look like you are running an antivirus software, it's never safe to leave the system without one.

Make scans with the following:

-Kaspersky TDSSKiller

• Anti-rootkit utility TDSSKiller

-ESET online scanner

• Free Online Virus Scanner | ESET

We recommended Microsoft Security Essentials from a strict BSOD perspective. Is most compatible & provides most stability compared to other antivirus app/Internet Security Software.

• Microsoft Security Essentials, Free antivirus for windows
• Malwarebytes Anti-Malware Free
• Good and Free system security combination

   Warning

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.
Please uninstall DAEMON Tools and any Alcohol % software. It uses a driver called sptd.sys which is known to cause BSODs in Windows 7. Uninstall the software using Add/Remove Programs. Reboot the system. Once the program is uninstalled, run sptd.sys uninstaller to remove the driver from your system.

Start Menu\Programs\DAEMON Tools Lite	Public:Start Menu\Programs\DAEMON Tools Lite	Public

As an alternative, many people recommend the use of Total Mounter or Magic ISO

Perform a System File Check to check the integrity of all protected Windows 7:

1. Click on the start rb:
2. Type CMD on Search
3. Left click and Run as Administrator
4. Type

   SFC /scannow

Full tutorial here:

• SFC /Scannow Command - System File Checker

Install all updates including service pack 1:

• Learn how to install Windows 7 Service Pack 1 (SP1)

Check your hard drive(s) for errors by running chkdsk:

• Check your hard disk for errors
• http://www.sevenforums.com/tutorials/433-disk-check.html

Number down items at start-up. Keep only your anti-virus, this also improves the time for logging into windows.

• http://www.sevenforums.com/tutorials/1401-startup-programs-change.html
• http://www.sevenforums.com/tutorial...ation-conflicts-performing-clean-startup.html

If you have a SSD, make sure the firmware is up-to-date.

Upload a screenshot of your hard disk using CrystalDiskInfo:

• CrystalDiskInfo Standard Edition
• How to Upload and Post a Screenshot and File in Seven Forums

Make a hard drive test from the hard drive manufacturers website:

• Hard Drive Diagnostic Procedure

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

• http://www.sevenforums.com/tutorials/105647-ram-test-memtest86.html

   Note

Pay close attention to part 3 of the tutorial in order to rule out the faulty stick.

   Information

Errors are sometimes found after 8 passes.

   Tip

Do this test overnight, before going to bed.

Let us know the results.