Why Is My Screen Turning Blue?

Video card.

It's happened to me before. Less than a 5 minute job and under $100 and you're off and running again.

Could be video card or it could just be a loose cable on that monitor. Make sure both ends are completely secure before you replace the card.

The flicker DOES sound like a bad connection. If it is a CRT monitor(NOT LCD, or LED, old style like a TV about 9+ years ago), it COULD be far worse like a bad screen, bad gun, bad circuitry, etc... Of course, that isn't consistant with the fact that it always works on one system.

The OS generally doesn't do such things. Rebooting DOES make it sound more like a video card/chip problem, but doesn't absolve the connections 100%. Like the CRT type failure, the card/cable deals with 3 main signals, Red, Green, and Blue. If the Red is weakend, the blue may look more greenish at times. If the Green is weakend, the blue may look more redish at times. If the green AND red are weakend, the blue may look a light shade of blue. The colors mix in odd ways, but look at printers that are magenta, Yellow, and Cyan! Blue often uses ALL THREE! Anyone here using a color printer has probably seen how navy blue becomes like baby blue when you run out of magenta, and how blue can become yellow if you run out of everything but. SOME printers in the past even used those colors to imitate black, though newer ones usually have black as well!

Check the socket on the back of your computer, to make sure all is secure, and the cable is securely screwed in. Check the chips/cards to make sure they are firmly seated, etc... If all else fails, replace the card, or go to a repair shop.

Steve

Yep, you should totally change your video card.

not enough air?

just sayin'...