This is the most common problem faced in almost all the computers. Your computer may actually turn ON, but does not display anything in your monitor. You may hear the fan running and see the light glowing but nothing is displayed in your monitor.
Important: There are numerous reasons why there is no display in your monitor. I’ve presented an step to step process, which can be carried to exactly diagnose the problem. These steps are used by the industry experts to diagnose the problem. And so it is important that you should should follow the process orderly fashion to successfully diagnose the problem.
This may the common problem, but also the most difficult problem to troubleshoot.
Steps to Troubleshoot
When a computer is switched on , the hardware runs a power on self test (POST). If any errors in the hardware are detected in this test, they are indicated by audio beeps or an error code is displayed on the screen.
You may or may not hear Beep sound depending on the problem in your computer. If you do hear a beep code, use the beep code list given in the Beep List to troubleshoot your problem.
All the monitors now a days displays a message whether the monitor receives any signal from the computer. If you unplug the wire from the monitor, it display some message like “monitor is working fine, no input signal” or like “No Input signal”.
If you still want to double confirm whether your monitor is working fine, follow the steps given in the Checking the Monitor.
In case you have not used your computer for a long time or if you have not cleaned your computer for a long time. You should clean inside your computer as there may be chances that your dust may be accumulated inside your computer which blocks the connection between your peripherals and preventing your computer from startup.
Reseating will reestablish all the connections in your computer and often proves to be a magic as it fixes most of the problems.
5. Start the computer with essential hardware only
Starting computer with essential hardware means starting it with following components.
- Mother Board
- Keyboard and Mouse
- Of course you will need a Power Supply unit
You can start your computer with the components given above. If your computer starts successfully, then you can rest easy that major parts are doing well in your computer and proceed to point 6. Else if your computer still does not display anything then jump to point 7.
6. Add hardware one by one to check whether your computer turns ON fine.
Add the expansion cards, Graphics Cards or whatever hardware you may have one by one. Each time you add a component, turn ON your computer to ensure that computer turns on with the hardware you have installed.
At any point of time, if your computer does not turn ON after installing a particular hardware, try removing that hardware and try again. If your computer turns ON without that particular hardware but fails to turn ON with that hardware, you can make sure that hardware is faulty.
7. Replace essential hardware with working ones
If your computer does not turn ON even after starting with essential hard ware, then try starting it a hardware that is working fine.
Note: Hardware from your friend system which is working fine will serve this. Be careful to make sure that you don’t make problems in your friend’s computer in the process of removing hardware.
Replace the essential hardware one by one to determine which is faulty. After making sure the faulty hardware, replace the hardware with new ones.
8. Finally, if all the above steps fails.
As I’ve mentioned earlier, this problem is the most difficult problem to diagnose. If all the steps fails, you’ll probably need to seek professional help from a computer professional or send a mail to me from Contact us stating the problem. I would be happy to help you to troubleshoot your problem.