Hey recently i had an issue which was as follows.
I have win xp and mcafee security centre fully updated. whenever i booted the computer it worked fine for a few minutes. then it will slow down to almost half its normal speed. cpu usage is minimal memory usage is minimal gpu usamge is minimal infact from all monitoring software that i tried it would appear my system is almost in idle state.
However when i run a video it would run so slow it impossible to understand what is being said. when i run a game the games that normally run on 100+ fps would run on 20 fps. my cursor at windows screen would leave a trail if i move it around as if its moving in slow motion. At first this problem came after half hour or an hour after rebooting it would get fixed but eventually it came to the point that it would start at login screen, and i could tell from the logon music of windows that my pc is LAGGING.
i ran mcafee and some malware and spyware software but nothing was wrong. so i came to the conclusion it is some virus which mcafee is unable to detect.
I resolved the problem finally by formatting my hardrive and installing fresh copy of windows but is this the only solution when iam paying annually for mcafee ?
Moved this to Malware Discussions for better support.
No antivirus, no matter what brand, is 100% guaranteed to stop everything there is out there.
Read the last link in my signature below for some hints and useful tools.
Those symptoms could also be caused by low memory, disk read errors or even old graphics (or other) drivers as well as infection.
Also try to avoid registry cleaners if at all possible as they can mess up a system badly.
Message was edited by: Ex_Brit on 21/07/13 7:24:44 EDT AM
As an afterthought, look in that last link in my signature lower down for Hijackthis or DDS and post the log on one of the forums mentioned there for analysis - they may spot something.
first off sorry for posting it in the wrong section when it asked me about my location i thought it was asking about my physical location "home or office " not the the thread section.
i dont think the problem had anything to do with hardware because my system was working fine a month ago. and after i reinstalled the OS everything went back to normal like before.
As for logs its pointless now because the problem is fixed.
thanks for helping