The first thing to do: try that mouse and that headset in another PC. If they are still working fine, you're lucky.
Then I would open the case and inspect the damage to the port. I assume it's a port on the motherboard which will make it difficult to repair. If you see no damage at all, you can try another (preferably old) mouse. Likely it will be damaged also, which shows it's the USB-port on the motherboard that's the culprit.
Then find a tech to disconnect the USB from the motherboard and install a PCI USB-card in stead. Consider installing a USB-3 card. It's faster with a USB-3 device, if you have that (a modern external disk, for example).
Hello, so 2 hours ago I started up my computer and suddently it I felt a very vague smell, it smelled like somthing was on fire or melted. So I paniced and shutdown my computer immediatly, opened up the case. Then I started the computer again while I was making sure all my systemfans and my CPU-fan worked. All the fans worked, but my mouse did not. So I unplugged the mouse-USB and I realized that the smell was coming from the USB-stick from my mouse. When I tried to plug in the mouse again I got an message that told me somthing like: "An unkonwn USB-unit requires a higher effecincy than the USB-ports energylimits. Unplugg the unit." I tried by swiching the USB-stick between diffrent USB-ports and to restart the computer, but every time I plugged in the mouse it showed up the same message. Sometimes after a restart the mouse did work in the beginning, but after a while the lights om my mouse turned off and it stopped working and I got that same meassage. I'm pretty sure it is not the mouse that is not working since my headset dosen't work properly either (though it is not showing the efficency message when I plug that one in).
Is there a way to fix this?