BSOD occasionally when browsing, sometimes on startup

Hello steviep43.

Code:

fffff880`081390e8  fffff880`07805f61Unable to load image \??\C:\Windows\system32\drivers\aswMonFlt.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for aswMonFlt.sys
*** ERROR: Module load completed but symbols could not be loaded for aswMonFlt.sys
 aswMonFlt+0x5f61

Uninstall Avast using Avast Uninstall Utility. Use Microsoft Security Essentials as your antivirus with windows inbuilt firewall, and free MBAM as the on demand scanner.
Download, install and update those, and then run full system scans with both of them, one by one.

steviep43 said:

Thanks. I used to use AVG but thought it might be the problem so went for Avast instead. I'll give Windows Security a try in that case. Is that the same error that's coming up in all the dump files?

I have checked the latest ones only. And, as it is the concurrent issue, you mist to fix it at first, and then, if the problem persists, we will search for more causes, for sure.

Hello Steve. Upload that crash dump. I think you should get it checked.

Your crash dumps are not showing any finite probable cause. In such a situation, it is better to enable Driver Verifier to monitor the drivers.
Driver Verifier - Enable and Disable
Run Driver Verifier for 24 hours or the occurrence of the next crash, whichever is earlier.

   Information

Why Driver Verifier:
It puts a stress on the drivers, ans so it makes the unstable drivers crash. Hopefully the driver that crashes is recorded in the memory dump.

How Can we know that DV is enabled:
It will make the system bit of slow, laggy.

   Warning

Before enabling DV, make it sure that you have earlier System restore points made in your computer. You can check it easily by using CCleaner looking at Tools > System Restore.

If there is no points, make a System Restore Point manually before enabling DV.

   Tip

• If you fail to get on the Desktop because of DV, Boot into Advanced Boot Options > Safe mode. Disable DV there. Now boot normally again, and try following the instruction of enabling DV again.
• If you cannot boot in Safe mode too, do a System Restore to a point you made earlier.

Let us know the results, with the subsequent crash dumps, if any.

No, not at all. You have done enough with it.

Disable verifier. Use the computer normally. If it crashes again, let us see.