I did post this in the Notebook computer area today also but no one is in there. Computer is locking up when in use (running a ppt program) or just when nothing is loaded at start up. The mouse just now started erratically jumping and I can't get controll of it?? I have ran, defrag, clean up, virus scans, everything possible but it still locks up. Found 1 trojan and removed it. Any help appreciated. It is an HP dv6355us with AMD Turion 64 X2.