Why does my computer screen bounce up and down sometimes?

I'm currently using the Beta version of Firefox. Whenever I get to a certain point when scrolling down (physically holding cursor over the scroll bar) my screen bounces up to the top of the page. It annoys the crap out of me, and I can't figure which...

im looking for a computer game i used to play. it was really simple, u had 2 red and white balls that bounce around the screen and you used your cursor to build horizontal and vertical walls to separate the balls and put them in smaller and smaller spaces...

Its a 46" screen, Sometimes when i boot up its fine other times it doesnt do anything. I just stays black. Then i have to turn the power off of the computer and shut it down the wrong way. I am afraid if i don't get this figured out, damage my computer...

It is usually after being on standby. The monitor light is on and the computer is on but the screen stays black. It doesn't say no video or anything and I have to restart the computer before anything will appear on the screen. Today it did it when I...

It never fails. I do alot of work from the computer. But I have such a hard time staying focused. Within 10 minutes of starting a project I'm daydreaming, sometimes I even fall ...show more

My screen jumps around a little bit, & I have run every virus scan that I have.

its no matter what site im on. the whole screen just flashes yellow. what could this be?

My laptop screen got cracked and only half of it worked. I got a new screen for the same model and replaced it. I turned on the computer and not even the back-light came on. I then put the cracked screen back on, started it back up, and the screen came...

After running XP Pro on my desktop computer with no problems for 2-3 years, my computer abruptly froze and slightly garbled the screen. When I rebooted, the computer would hang during the boot-up process (the only way to turn it off was to unplug the...