I need help with an older graphics card, Geforce 8600 GTS!! PLEASE HELP IF YOU KNOW ANYTHING ABOUT COMPUTERS!?

I have this graphics card and i know its an older one, it was running fine until today it wont run. It is stuck on almost like the start up phase where the pc is testing all the hardware. The fan on the card just runs at full speed and i can't get an image. I really don't care if it's broken because i can just get a new one but i was wondering if there might be some way to fix it. Also its not the motherboard or anything because I switched back to the integrated graphics and those still run but are pretty sh*tty. PLEASE HELP!!!!