Why Won’t My Desktop Turn On?

First thing to check is if it's plugged in properly. Make sure both ends of the power cable are securely connected. When you press the power button, does anything happen? Do you see or hear any fans trying to spin? If you've got a clear case, look for any lights on the motherboard. Starting with these basic checks can help narrow down the issue.

Have you tried unplugging it, waiting a bit, and then plugging it back in? Sometimes it helps just to reset the connections. You could also try holding down the power button for 30 seconds after unplugging it to discharge any residual power.

I had a similar issue with my Dell laptop that wouldn't turn on, and it turned out to be a bad power rail on the motherboard. If you're comfortable, checking inside could reveal more, but let’s start with the basics first!

There are definitely things to check before jumping to the motherboard. Like someone mentioned, check the power plug and also look for a master switch on the back of the computer. Make sure that’s turned on. If everything seems fine there but the computer still won’t power on, the power supply might be the issue. Swapping out the power supply with a known working one can help you find out for sure.

It could be various parts causing this problem, not just the motherboard. A common first step is to test the power supply to see if it’s dead. There's a simple test called the 'paperclip test' that you can look up on YouTube. If your power supply checks out, we can go from there.