USBs Not Working

So I just got my desktop back from getting fixed (wouldn't turn on/faulty power) and now the two USBs in the front and one in the back do not work.

I'm thinking either I need to update the USBs somehow (the computer stopped working last year and I was only able to get it fixed this month, so I know some things are going to be out of date) or they forgot to plug the USBs back in).

Also, when I plugged my phone into one of the USBs that work the computer turned itself off?

This is a link to my other post! I'm sorry my desktop is a mess!