my computer is f in me off

[penguin]

ha people its me Penguin i need you to help me again, my computer every time i log on after about 5 seconds it restarts its self and it keeps doing it wen i went on it to see if it had stoped yesterday it came up with gfx not compaterball and it is woring me!!!

please could you try and help me?.

thanks for reading this.

[Pinchy]

Does it load up in safe mode?

[TUngsten]

sounds like a similar issue to what I was having the other day - turned out one of my RAM sticks had spontaneously gone bad