Homemade computer won't turn on?

[CA77OFGAMING]

Hey guys, so here's my problem: I have a PC that I built around Christmas time. Up until this afternoon, everything was ok. But, this afternoon, it stopped working. It started as I would be able to turn the computer on, then a couple seconds after I got to the desktop, it would turn off. Later, after this happened multiple times, the computer wouldn't turn on at all. The lights would turn on and the fans would start to spin for only a fraction of a second, then turn off. At first I thought it was the drives (boot-up ssd and a 3TB hard drive), but when I unplugged the to see if it would start up, the same thing kept happening. I'm beginning to think it's a dead motherboard, but I want someone elses opinion. Thanks for reading. Hope you can Help out.

[CA77OFGAMING]

Sorry, forgot. Windows 7 home premium.

[Midknyte]

Did you try swapping the PSU? For power problems, I usually start from the wall socket and go up the system from there.

[Shinma]

If not tried already,
Take a look at all the voltage readings via the CMOS/BIOS menu and verify they are all within specifications.

[CA77OFGAMING]

All solved. I do believe it was the power outlet I was using. I had my computer, my monitor, and a wireless extender plugged in, along with another extension cord plugged into that to power my speakers. Changed up the location and seems to be working fine. Thanks for all the help!

[Midknyte]

I recommend you get a UPS. Also you should not daisy chain extension cords and surge protectors.

[SpywareDr]

Also you should not daisy chain extension cords and surge protectors.

. . . because it's a fire hazard.

[Midknyte]

. . . because it's a fire hazard.

Did you have to go through OSHA training too?

[SpywareDr]

Anually, from our local Fire Safety Specialist.