As long as it's a desktop PC you should be able to replace the processor. You'll have to find another processor that matches the lga 775 socket on a website such as newegg or amazon. Once you do that, You should be able to remove the heatsink from the mother board, take the old processor out, clean of the heatsink, put the new processor in, put some thermal paste on, slap that heat sink back on and call it good. There are plenty of youtube guides that should be able to help you out here as well.