Hello and thank you for taking the time to read this post.
Since I built my computer a few years back I noticed that not all of my USB ports were working in the back of the tower itself. I thought this was strange but thought nothing of it because at first, I could just change them around a bit and it would work (The mouse wouldn't work in the top left port but the keyboard would or one day the mouse will only work in a certain USB port). Every once in a while it would stop for a bit I could just leave them as it was and it could work for a few weeks and I didn't dear touching it. But until recently it has started happening again, now out of 8 USB ports only 2 are working, the mouse in the top left and the keyboard in the top right. I plugged my external HDD into the computer and nothing was happening, this was working last night why has it all of a sudden stopped. I have 2 USB 2.0 slots and when I plugged the external HDD into them it light up as if it was being powered but nothing.
What could be the cause of this problem because I am really scratching my head now, I've tried updating the drivers and they're all up to date too.