PC broke pls help

PC shit the bed today. Seems as though it's likely the power supply or the Motherboard. Trying to prepare for the possibility of it being both here. I use my PC for generally everything and anyone that knows me knows I use it as an escape since I'm an old cripple and I can't leave too often. Any and all donations are appreciated, but not expected. At this point the goal means nothing. Any dollars help.

Thanks in advance :)