So I recently bought a pc on eBay and everything it works fine but there are a couple of minor issues I need help with. When I was connecting the pc to my monitor via DVI and the IO shield I noticed it took a lot of effort to push the cable through the slot. After one day of use something happened and all I could see is the computer loading screen when turning on my pc but I could not see anything once windows started up. The DVI cable and visuals work fine when I plug it into the graphics card rather than the IO. I have also noticed that only one usb port works out of the four located on top of the case. The audio and mic ports do not work either but the on button and fan speeds do. I can provide details of the specs for anyone that can help.