Random BSODs during normal work

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.

Code:

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
2. Type CMD on Search
3. Left click and Run as Administrator
4. Type
   Code:

   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
• Disk Check

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

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

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.

• RAM - Test with Memtest86+

   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.