Hello all. Not sure if this is the right sub forum for this type of questions, so please move it if necessary.
Yesterday I was asked to look at the PC remotely by my friend to check thinks (you know, check for viruses, clean stuff etc). I noticed it was running very slow, I looked at task manager it said cpu load was 100% but when I sorted the prosecces by cpu usage, no process was using 100% cpu or even close, while idling. (System Idle proccess was at 80 - 90% I think and other processes didn't add up to anywhere near 100%, show processes from all users are checked). I scanned the system with MBAM, super antispyware, Hitman pro, CCE, TDSS killer and Emsisodt emergency kit. apart from bunch of tracking coockies everything turned up clean. No malware or even unknown entries in Killswitch and Autorun analyzer.
Wierd thing I noticed, according to Windows task manager, Process explorer and killswitch CPU hog (the cilprit) is whatever program I start, I mean if I start CCE, it will use 60 and up % cpu, if I start process explorer then it will use 60% and up of CPU etc.
I don't think it's HDD PIO mode problem.
Since it was remote connection I couldn't use safe mode or boot cd.
Os on that PC is Win 7 x32
CPU is Pentiom 4 2.93 Ghz
4 gb Ram
I've run out of ideas, any help?