Can anyone tell my why my screen does this?

[Thesystem3]

Heres a video of it. It will do it for anywhere between 1-5 mins then return to normal.

http://www.youtube.com/watch?v=AUhoQf09jQA

 

[jsc]

Please post system specs when you ask for help.

Either the monitor, the video card, or possibly the motherboard unless your system is a laptop.

If a desktop system, test both components (separately ) with another computer.

If a laptop system, about all you can do is open it up and check all the connections, and that is normally not a user job.

 

[Thesystem3]

Laptop, ATI Radeon 3200, AMD Turion X2 (2ghz), 3 gigs of ram, 250gb hd, Vista