Help! Image Jittering All Over the Place!

[JosephBAdams]

Hello guys. For my personal computer screen, I use a 32" 720p Sharp Aquos in its native resolution of 1360 x 768. My video card is an NVIDIA GeForce 9600GT. When I fired up the computer this morning, I noticed that the image on the screen is jumping up and down--badly. The whole picture is jittering between the right place and 3-4 inches above where it should be on the screen, making it basically impossible to use.

The funny thing is that I've used this monitor for probably 6 months without ever having a single problem. I haven't changed anything, moved anything near the monitor, etc. What's causing this problem?

My refresh rate has been set at 60 Hz since the day I first started using this HDTV. And of course, the picture on the TV is perfectly clear when I load up a Blu-Ray on the same TV. What's causing this issue with my PC?

Update: Now when I went to turn on the computer and show my sister what was happening, the screen is back to normal. I didn't do anything to change it.

 

[LittleNemoNES]

interference

Especially if you are using an analog connection (like VGA) you may experience the things you did if a power cable or something similar is making contact with the cable.

 

[JosephBAdams]

Thanks, Gersson. I've moved all electrical cables away from the computer case, making sure that the only place where anything touches the case is where that object is intended to be plugged in. So far, so good!

 

[Schmide]

Drink less coffee