I hope somebody can help...
I am running AVG 9.0.851, a couple of days ago AVG told me I was infected (I think it was Trojan Generic.XXX or something but can't remember now). I asked it to clean up and it warned me that it was struggling to remove the infection - again, sorry I don't know the exact message.
Anyway, when I restarted I got a couple of error messages, one was due to an invalid registry entry that I managed to clear using HijackThis. The other error is that just about every time I boot up my computer I get a message saying "Windows has encounterd a critical error and will restart in one minute"... as you would expect the computer shuts down in 60 seconds. Now, this happens nearly every time, but occasionally it starts up fine and I have no problem! Earlier tonight it was having the usual problem with the error message and then restarting. I tried removing the Battery (it's a laptop) re-inserting and restarting and... it worked ok, no errors - maybe a co-incidence?
I've been reading the advice on BleepingComputer and I have run (in all different orders and combinations):
Autoruns (can't see anything out of the ordinary but am no expert)
HijackThis (got warning message that the "system denied write access to the Hosts file") - log file shown at bottom of this post.
Every time I run these they pick up viruses, they remove them, I restart computer and (usually) I get the "restart in one minute" message. I restart in Safe mode, re-run the virus scanners and go through the whole process again...
Please let mw know if you need more information and how I can provide this.
Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 23:07:22, on 19/08/2010
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v8.00 (8.00.6001.18928)
Boot mode: Normal
EDIT: Misplaced HJT log removed
Edited by boopme, 21 August 2010 - 09:16 PM.