Reply #1: Is it a CRT (tube) monitor? [View All]

[Statistical]

Do the lines "move" up and down the monitor?

If so then likely it is an issue w/ monitor and not your computer. CRT "draw" the screen one line at a time as they age the electron gun slowly goes out of alignment. The "line" you are seeing is electron gun slightly overdrawing the screen. i.e instead of moving down 1 full line it is overlapping and moving down 0.98 of a line. After enough lines that error adds up and it overdraws an existing line creating an artifact.


Nice news in LCD monitors are cheap. Likely you can get a better, higher resolution monitor that is lighter and wastes less energy (heat) than your old CRT.

Buy a good monitor and you can keep it and use it on your next computer system also.