i have a problem with my PC is that some times it reboots itself without any message. whenever i install anti virus, my operating system gets corrupted . I have p4 system with 2.4 possessor and Xp Service pack 3 is installed on it .some body suggested me to break and re- create the partition . i did the same but problem is still there .I have several times formatted my Hard disk. now i feel it is due to some kind of memory virus .............if it is due to memory virus pls. tell me how can i remove it ..