Troubleshooting computer that actually turns ON but it freezes or continuously reboots during the startup.This may be due to some BIOS error thrown by the system or due to some error in the POST.
There may be some error message shown in the screen as a reason why the system has not booted and most times there won’t be any error message at all.
Important: There can be numerous reason why your system is not booting, its important to follow the steps in the way I’ve given as it is the process followed by several industry experts and professionals to diagnose the problem.
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.
A mis-configuration in your BIOS may also cause your computer to behave strangely during the startup. Clearing the BIOS memory will reset the BIOS settings to their factory default.
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 magical step 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.