I left the MemTest to do its thing overnight and it's now done 18 passes - I guess I'm safe to cancel it now
No errors found.
I don't know the number o passes the tool does. When a full set of tests passed the program show the message "Pass complete, no errors, press Esc to exit" centered near the bottom of the screen.
Could you tell me what the MemTest is for and in what situations (such as frequent BSOD?) I can use it to check the integrity of my system?
MemTest checks the computer memory and it stresses also the processor a little bit. It's a Hardware test that helps determining the stability of the computer independent of the Operating System.
I have a problem with another computer but I'll start a new thread when all of this is over.
Yes, it's better to start a new thread.
Now about your computer problem. I think it's time to consider the possibility that the computer may be infected with malware! I would like to check that.
Because we need to use some tools not allowed outside the Malware Section of the forum I need you to post on the Malware Removal
section. Start a new thread with a link to this topic and stating that I requested to post there for a malware check.