From: Kendra on 03/13/2004
It's your graphics card.
I had an nvidia TNT2 and I had grey lines popping up all over my sheeot. I called Samsung, had them replace my monitor, fought with them, got broken monitors, different sized monitors, and finally got one that worked.
But the display was the same.
I took out the graphics card and replaced it with an old Voodoo3 card and it worked perfectly.
It's not your drivers, it's not your monitor, its your graphics card. Your graphics card is probably failing due to heat damage or just being old.
It happens, it happened to me.
Save yourself the trouble of calling the warranty on the monitor and just replace the graphics card. If it's an older computer, get a fairly simple graphics card. From experience, the ATI Radeon 9600 sucks ass. Keep it simple.