On a windows 8.1 computer I have, it will only boot to bios and the bios has no video. There is no graphics chip on the motherboard and I have tried all the video outputs on the graphics card. It was working fine until I installed a serial port and wanted to change the port number. I tried to go into bios and I had no video. Online info told me to try resetting bios by removing the battery and replacing it. When I did this the computer only boots to bios with no video. I am just about to take it to a pro and would like to save the expense. Any help would be appreciated.