Computer Crash

I have a family desktop that worked perfectly fine until one day I was on my computer and it just crashed. It started occurring more often and I then realized that whenever my foot hit the plug it would crash. The outlet is right by my foot so I wouldn’t even realize when I hit it. but it’s not just that it would crash. After my foot would hit the plug. It wouldn’t turn on for a whole day. I’m currently writing this because I’m fed up with not being able to use my computer because I moved my foot.