Bear with me and retry any of the strategies that are listed here. Sometimes it is possible that what we think we did and what we actually did are two different things. Since you are receiving an error message, at least we know that the monitor isn’t totally broken.
Troubleshooting no video input: power related problems
Make sure that the electrical outlet that you are using actually works. Try plugging another device into it to see if it works. It doesn’t matter what you plug in since you are only checking to see that electrical current is available. Of course, if the computer is on and so is the monitor, you can skip this step.
Troubleshooting no video input: cables
Unplug each cable and plug it back in making sure that it is in the correct spot. Even if you have already completed this task, it won’t hurt to do it again. Sometimes the cable is slightly ajar and this is the reason behind the monitor not receiving a signal. In addition to checking that the cables are plugged in properly, you also need to make sure that the cables are in working order. In order to do this, you need to swap out the cables with those on another computer or you need to purchase new ones. Remember that the monitor has two cables: one for the electricity and one to attach it to the computer.
Troubleshooting no video input: swap out monitors
Borrow a monitor from someone and see if it works with your computer. If it does, then your monitor is probably broken. If you can’t borrow a monitor, try hooking yours up to a different computer to see if it works.
Troubleshooting no video input: Clean the computer
If you haven’t used your computer in a while, you might want to consider getting a can of compressed air and clean the computer.
Troubleshooting no video input: boot up in “Safe Mode”
Booting up in this mode will use the fewest number of drivers, programs, and files on the computer. This is important because the computer is more likely to turn on if there is a problem. To turn the computer on in “Safe Mode,” turn the power button on and immediately begin to press the “F8″ key. Follow the prompts to get into “Safe Mode” or you might also want to check out “Last known good configuration.”
Troubleshooting no video input: check the video card
If you are comfortable playing around with the computer, you can take out the video card and reseat it. This has been known to work. Touch metal before you open the case to ground yourself. Some people even wear latex or rubber gloves to protect themselves when handling the inside of a computer. If you can get the computer on in “Safe Mode,” you can update the video card.
Troubleshooting no video input: additional tips
If you got the monitor to go on when you booted up into “Safe Mode,” complete the following steps to see if you can resolve the problem permanently:
- Run “chkdsk.”(Start, Run, type in “cmd” and press enter.)
- Defrag the computer.
- Check that the memory is seated properly in the computer case.
- Check that all essential devices are properly plugged in.
- Clean the registry using a reliable cleaner such as
Troubleshooting no video input: replace the motherboard or power supply
If everything else has failed up to this point, you might have a hardware issue with either the motherboard or power supply for your computer. A local computer technician will be able to test these components for you.

“Not Responding” error messages happen with Windows finds that a program isn’t behaving properly. You shouldn’t need to pay for AOL to play free online games - even AOL games. You can use any browser to access the AOL games, and that is the first place I would start. I’m not going to tell you to cancel AOL, but a lot of techs would agree that canceling AOL is a good first step.