Nothing on the screen?
Some monitors have more than onepower button or switchconfirm that they’re all switched on.
Check for disconnected monitor power cable connections.
Your monitor might be working fine and your only problem may be a loose or unplugged power cable.
Check for disconnected monitor data cable connections.
Turn the monitor’s brightness and contrast controls completely up.
It might be showing information but you just can’t see it because these display configs are too dark.
Most modern monitors have a single on-screen interface for all controls, including brightness and contrast.
An older monitor might have manual knobs for adjusting these controls.
verify all monitors are set up properly (if this is adual-monitor setup).
This could be due to a number of things like a missing/corruptvideo carddriver or an incorrect setup procedure.
Your monitor might be fine but your machine might not be sending information to it.
If the new monitor you connected doesn’t show anything either, proceed to Step 7.
If the new monitor you connected does show information from your box, proceed to Step 8.
Determine why your box isn’t sending information to your monitor.
Since neither monitor works, you now know that the computer isn’t sending information to the monitor.
Test your original monitor with a monitor data cable that youknow is working.
If possible, test using the data cable from the monitor that you successfully tested earlier.
If not, purchase a replacement monitor data cable to test with.
The data cable on some older monitors are permanently connected to the monitor and aren’t replaceable.
In these cases, you’ll have to skip this step and replace the monitor.
