PC Troubles (Patreon)

Yesterday my pc turned off all usb slots and my monitor for a brief sec. And today the first bootup didn't go through, it had to start up again.
I think my power supply might be having an issue. I hope it's just 2 flukes, but I'm scared. 
It's my only form of entertainment here and nobody will be around for 3 days. Meaning I'll be twiddling my thumbs for those days. I do have my phone, but that's not going to do much.

Seriously hoping it's just bad luck and not a broken power supply, but already looking for solutions. It will be hard for me to replace it as the pc is too heavy to pick up and dismantle.