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Either GPU or your actual screen my friend. Take it to a specialist laptop/computer repair shop.

certainly wouldn't reformat as stated. easy way to test that would be to boot from hirens cood cd into mini windows xp but I agree it is almost certainlyGPU or screen Have u tried external monitor that will isolate screen. usually a function key to switch over Also reseat memory but unlikely that. Hope this helps

Thats really fudged up bro. If you can't fix it take it to Best Buy.

Lol, why is there 6 different screens?
I think this is a hardware problem, not software

This may be out of the blue but Test you RAM.
I Recommend memtest86+

Link:
http://www.memtest86.com/

1. Then click on Free Download on the left hand side.

2. Click on the one that Says: "ISO image for creating bootable CD (Windows - zip)"

3. Download it and save it to your desktop (or downloads folder if using Vista or 7)

4. Use WinRAR or Windows ZIP utilty to extract the .iso file. For this Demo i will be using WinRar.

5. Double click on it to open it and click extract button at the top.

6. Make sure the path to says Desktop. Should look like this:

7. You will need to Download and install Imgburn. This is the program i will use for this Demo. (If you use some other .iso burning software like Nero then use it to burn the .iso

Link:
http://www.imgburn.com/index.php?act=download

8. Open Imgburn and Click on the one that says "Write Image File to Disc"

9. Put a Blank CD-R into your Computers CD Burner.

10. Where it says Please select a file Browse for your memtest86+.iso file (i put mine on the desktop)

11. When your .iso file is loaded and a blank CD-R is in your Computers CD Burner, Click on the Write Image.

12. After you burn your .iso to you CD, restart you pc and boot to CD.

13. It varys from version to version but mine you press the Number 1 Key for Memtest86+ Single CPU.

14. Let It run it will halt if an error was found.

Good Luck!

Reformat your hard drive.
I have seen this issue before, and that is the only way I know of as to how to fix it.

Well if the mouse/keyboard stops working completely then it's probably a hardware driver problem or something.