Distorted or skewed image on monitor.
Cause:
This issue can occur from any of the following possibilities
- Loose or defective cable
- Refresh rate issue
- Interference
- Bad monitor
Solution:
Loose or defective cable
You may receive a distorted image when the cable is loose or defective. Disconnect the video cable going from the back of the computer and verify that no pins are bent, burnt or broken. Once verified re-connect the monitor cable.
Refresh rate issue
If the refresh rate is not properly set the monitor may have a wavy or an appearance that lines are going down or across the monitor slowly or fast. This may also cause a flickering affect.
Interference
Magnetic or other types of interference can cause a distorted image. Verify no speakers, fans or other magnetic devices are close to the monitor.
Bad Monitor
If the above possibilities have been checked it is likely that the monitor is bad. To verify this it is recommended that the monitor be temporarily disconnected and then connected to another computer. This can be a friend’s computer, a work computer, and/or a computer at a service centre. You can also help verify a defective monitor by connecting another monitor to your computer.
Note: Connecting your possibly defective monitor to another computer will in no way harm the other computer.