I tried going into safe mode and i used a restore point to when it was working. I booted up in normal mode but same problem.
I cant run an antivirus because i was using Windows Onecare but that stopped working too.
I cannot log in MSN either because it thinks im not connected to the internet and i cant get to most options in Control panel because it just freezes as a white screen. Also the Windows installer for applications has stopped working.
Major meltdown. Just a few quick ideas. Maybe someone else can think of more:
Did the system run OK in safe mode? Try an anti-virus/spyware check in safe mode if you can. If not I'd try to boot from an anti-virus CD and run a check from there. I'd also run 'chkdsk' from the repair console off the Vista DVD - to check for hard drive corruption. You can also try the memory check from the DVD or better, DL memtest86 and boot from it.
And post your detailed system specs. Homebuilt or brand pc?
The year being set to 2040 is likely the root of some of your problems... as Windows Update gets extremely upset when the date is way off. I've also seen a lot of errors and other strange behaviour when the date is set that far ahead. It definately would mess with system restore.