It sounds like a Video Card problem to me...
Did you try overclocking ur video card recently? or Did you try Disassembling ur laptop?
Is your laptop overheating?
I was thinking that too. The only reason i thought it was the motherboard was because the sound wasnt working either. I have never overclocked it before and only tried dissasembling it after the problem started. It does tend to get hot but thats not long periods of time. I was also thinking that when i got do a Dell Diagnostic check from the BIOS it said there was an error with the video memory. hmmmmmm you think that would cause all these problems? thanks for your help so far