(I know it is the BIOS.) It's probably a 5-8 year old Dell computer, and so when I turn it on it goes *beep* *beep* *beep* *beep* (A beeping noise.) and then shows several smiley faces. I was installing random access memory to make the ridiculously slow computer slightly faster because, it has only 256 mega bytes of RAM. I think (even though it probably isn't possible) that the RAM had some kind of virus.
Whilst there are several ways to eliminate this stub, one of the easiest I've used is to convert it to FAT 32, then back to NTFS. With that in mind, wouldn't the best thing be to write protect the BIOS flash and forget about it?
A security expert who does some "white hat" hacking (non-aggressive only) has examined several logs he's had me create using Sys Internals tools from Technet.
and several spyware-logging tools, and asked me questions about how and when the BIOS changes settings and passwords, and has said that he thinks it likely that I have a rare BIOS virus -- from when I unknowingly was having a different malware "professional" help me with my computers, until I found out that he was in trouble with law enforcement and stopped having anything to do with him.
Only after eliminating those might I think about checking or resetting the BIOS. An 18 year career as a programmer at Microsoft soon followed. in 2003 as a place for answers to common computer and technical questions. I believe that, as I said, there are proof of concept instances of software which, essentially, initiates a malicious flash to insert itself into the BIOS. Myself and other technicians I know could find any explanation for this.
And again, since that is BIOS-specific it's not something I worry about at all. Most of the people who lost their video reported having a virus warning right before they lost their video.
To Fred (April 28, 2010 post), the virus warning they saw right before they lost video, was Not likely their anti-virus program.