Have a look at event viewer. INSTRUCTIONS

thanks i did that and one error that keeps popping up is DCOM and that a server didnt register in the required timeout, i then ran the builtin help on it and it says to use regedit and to go to HKCR\Clsid\clsid value\localserver32
and to use the filename i found in there to find it in my computer to find the vendor and to contact them, however it doesnt specify a filename in the localserver32 what should i do?

http://support.microsoft.com/kb/825750

im trying to do the edit registry part but it comes up with a problem when im trying the Dcomcnfg.exe where i will open the component services but when i click the computers folder it closes itself down, i have tried it repeatedly, what should i do?

I am beginning to think an infection may have caused the problem in the first place. What security software have you got and what happens when you scan with it?

eset, ad-aware, norton, spybot, malwarebytes. the problem started when i was installing quick heal av lite 2009 from a cd from PC advisor, when it first crashed. ill scan with them and reply in a minute

i just scanned it once and it raised 42 problems, i have fixed them all and am scanning again

If it turns out not to be a matter of infection, or if after the infections are removed you still can't access the desktop a repair install of windows will probably be in line.

ok thanks, im trying it again but if it doesnt work after this i will take it to a repair shop