When I press power button on desktop nothing happens?

If you’re still getting absolutely nothing when you press the power button, look to see if your motherboard has any idle indicator lights to confirm that the motherboard is definitely receiving power. If not, then you might need a new power supply. Make sure it runs to the motherboard and is well connected.

How do you troubleshoot a no power issue?

When you press the power button to turn on the computer but there is no display on the monitor, please follow the below steps to troubleshoot :

Check the power supply.
Check the CPU.
Check the memory.
Check the graphic card.
Check the monitor.
Test with minimal components, isolating the possible cause.
Clear CMOS.

How do you turn on a computer that will not turn on?

When your computer won’t turn on

Unplug the power cord.
If it still doesn’t work, plug something else—like a lamp—into the same socket.
If the cord appears to be fine and the socket works, try replacing the power cord or, in a laptop, the AC adapter.
The problem could be with the power supply.

How do I force my computer to start?

Use the power button

Locate your computer’s Power button.
Press and hold that button until your computer shuts down.
Wait until you hear the computer’s fans shut off, and your screen goes completely black.
Wait a few seconds before pressing and holding the power button to initiate your computer’s normal startup.

How do I test my desktop power supply?

To test your PSU:

Shut off your PSU.
Unplug all cables from the PSU except for the main AC cable and the 24-pin cable.
Locate pin 4 and pin 5 on your 24-pin cable.
Bend your paper clip so the ends can be inserted into pin 4 and pin 5.
Turn on the PSU.
See if the PSU fan turns.

What is the problem if computer does not start?

If your computer isn’t turning on at all—no fans are running, no lights are blinking, and nothing appears on screen—you probably have a power issue. Unplug your computer and plug it directly into a wall outlet you know is working, rather than a power strip or battery backup that may be failing.