on my laptop theres this problem..all starts normally ..on the bar appear the usual trace icons of my start up list...then after around 1-2 min the pc starts automatically to use up more and more cpu without any appearing application running..in the task manager no application running ..when i check which processes run i see a huge list of them that seems to be normal except of a svchost.exe that is under user SYSTEM and uses 90-99% of the cpu , blocking anything else that i try to do...this doesnt allow me anything else but to terminate this process..when i do that the cpu usage goes back to normal and the pc responds again..now since i guess that the svchost.exe normally runs in every pc i suspected a trojan of some kind behind it...run scan with ad aware se personal build 1.06r1 and it showed only some low risk adware..run a scan with Spybot-search & destroy 1.4 and it also some Hb Tools crap that upon deletion didnt solve the problem ..also showed some hkey stuff that i dont dare to delete in case it affects the system..
so then i run a scan with nod32 version 2256 that also didnt solve anything ..then with the avg antiviral that is recomended here which showed some adware stuff and a trojan coming from the nod32 (!) ...anyhow all the detected stuff has been deleted and yet the problem is always there...any ideas on what next ????