New PSU, keyboard stopped working.

Just got a new PSU and after installing and booting my PC I realized my keyboard doesn't work. The LEDs on the keyboard light up but none of the keys respond.

Some other things I noticed:

- The usual boot screen when I start up doesn't show up anymore

- Im not sure if my mouse is working either

- Other keyboards don't work either

- When the keyboard first boots up, I can press the number lock button and the lights on the keyboard respond, but once I enter the windows home screen it stops responding.

Thanks for reading.