I have a Sony Vaio VGN-FZ18E which is experience some major problems at the moment. Firstly, I get 'nvlddmkm' problem about every 10mins or thereabouts which causes the screen to lock, go fuzzy, blank the screen and then revive and become functional again. This can eventually, or straight away, lead to a total fuzzy screen lock-up where I simply have to hit the off button to restart the computer. This is also interspersed by various other screens such as those below; mixed pages, blue screen, which seem to have come from the Matrix. The computer is about four years old and the front left of it can get very hot. Is it just knackered? Would a re-format and re-install do the trick? Any ideas or solutions? Cheers, Tom.