Troubleshooting a system that will not power up

What can i do if my system does not come up?
           When your system does not come up instead of just rushing to the near-by engineer you can easily trobleshoot(try to detect the problem an solve it). When your laptop or desktop computer does not come up,you should check the following:

1. Electric Power:Check if the power indicator is signalling the presence of electric power in the system. This indicator is always on the front part of your system or on the power buttons on others. If there is no indication of electric power in the system, then check the wall socket first to make sure the wall socket is not faulty. Check the power cable and ensure that there are no broken wires. Ensure that the power cable is properly fixed. For laptop computers check the battery and ensure that it is charged and properly fixed else ensure that the laptops charger is working fine and properly plugged in.
2. Random Access Memory(RAM): a bad RAM can also cause your system not to power up. Try to remove it and place it in another memory slot on the motherboard.To be sure if your motherboard is still in good working condition, remove the RAM and power on the PC.You should hear continuous beep sounds.If you hear this then your motherboard is fine. If placing the RAM in another slot does not work then the problem lies with the RAM itself. You will need to replace it.
         Over heating of the processor or a proccessor that is not well seated can also cause your sysetm not to come up.
          If your computer turns off immediately or even within a few seconds after it is turned on, it could be due to several possible issues.
Loose cable:Make sure all cables inside the computer case are firmly attached to the motherboard and each component. You'll want to check the IDE cables and SATA cables, which are typically connected to the hard drive, CD or DVD drive, and floppy drive (if present). Check both ends of each cable and make sure they are firmly attached to the component and the motherboard. Turn on the computer and test to see if this resolves the issue.Sometimes the best way to verify a cable is not loose is to disconnect and then re-connect the cable on both ends.
Memory issue:Verify the memory modules are properly seated in the memory slots. To check and fix this, open the computer, remove the memory modules from the memory slots and re-insert them, making sure the clamps on both side of each memory chip snap into place and the memory chips are firmly seated in the memory slots. Plug in the power cord and turn the computer on to see if the issue is resolved.
Motherboard issue:The last thing to check would be the motherboard; however, this can be rather difficult since the issue could be just about anywhere in the circuitry. A faulty circuit or malfunctioning component (e.g. capacitor) can cause the computer to shut off immediately or not turn on at all. If none of the above recommendations including number (1) above help resolve the issue we suggest replacing the motherboard or sending the computer to a repair shop.

You can share your experience troubleshooting or other problems you have with your computer in the comment box.