Posted 16 November 2010 - 01:12 AM
Okay, well, my laptop has been through a lot of abuse recently. It's had virus after virus upon virus. I've tried a lot of a-v's and none have kept it clean for more than 3 months. I formatted the hard drive about 6 months ago when my computer got a large, very nasty trojan and(which two computer repair services gave up on trying to remove) BSOD'd repeatedly (it was a weird BSOD, too, no error statement).
Now I have PC Tools ThreatFire, Microsoft Security Essentials, and MBAM, and this combo worked for a while, but the other day my computers performance plummeted drastically, and I got a warning message from microsoft saying ThreatFire had encountered a problem and needed to close (the generic error message for this, just like if firefox froze or something). But then, when I tried to re-open ThreatFire to get it running again, it wouldn't open. I'd click it, it would give me the hourglass cursor for a few seconds, then stop. I ran a scan with Microsoft Security Essentials, and it gave me this:
So I use Microsoft Security Essentials to remove the malware and then used system restore to restore my computer to more than a month before to be safe. In retrospect that may not have been smart since I don't know for sure where I picked up the virus, but restoring did seem to work for about 2 weeks. I ran MBAM (full scan) a few times during that time period and it came up clean. Now today, my computer is showing the same symptoms as before: ThreatFire disabled, Computer slow, running at at least 80% CPU usage all the time, even with just firefox open, but this time MBAM ran clean and Microsoft Security Essentials came up clean, too.
Basically, is my performance problem a residual effect of the virus, a new virus, the same virus back full force, or simply my computer being old? (which it is, it's a Dell Inspiron 1501 from 2007) How can I fix this?