Solve : pc jumps and down?

1.	Solve : pc jumps and down?
Answer» My monitor KEEPS jumping up and down. Can't read anything until it stops. I replaced the monitor. I just picked up a Keyboard and Mouse. A new Monitor Cable. I did try the refresh rate. It only has 60 and 75. I put it on 75 to no good. Running WINDOWS XP Pro....... Can this be fixed? Have you tried a different VIDEO card? Or using integrated if an option instead of an added video card? Or if its integrated video that is acting up, adding an added video card to b the new default video source? I ran cCleaner and what EVER I did worked so far. Jumping stopped, I also downloaded Google Chrome..........

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