I had no idea where to put this, so sorry if it's in a bad category. But bassically, I used to put my computer on standby every night because it's pretty loud (cheap fans), and suddenly I go to the "turn off computer" menu where you have choices to Standby, Restart, or Shutdown, and hit standby like I always have, and This time I get the whole WINDOWS preparing to standby thing, but When it would normally go dark, it just all comes back and it's like I never hit anything.

Windows XP SP 2

I haven't made any changes to hardware, and Have run VIRUS SCANS in this order
- Ccleaner
- Ad-Aware
- Spybot S&D
- AVG free
all are updated.

thanks for the help guys So, it seems like something is waking it up as soon as it goes into Standby, right? And, that's probably what is happening. The key is to figure what's waking it up.

I suggest opening Task MANAGER and take a close look at what's running. Try killing some processes before going into Standby and see whether you can find what's causing it.

I think you could possible have some MALWARE that's not detected by any of the maintenance tools you listed. You may need to post a HijackThis log if you can't identify the culprit by using Task Manager.