i just had to reformat my 2003 gateway. windows xp is the os. before reformatting, my computer kept shutting down and restarting every 15 seconds or so after startup. i figured there was probably a virus so i inserted my windows xp cd and restarted my computer to start the reformat process. it asked me if i wanted to restore the factory way and i proceeded. it then prompted me to the blue screen where it shows the progress of the download. it gets to 3 percent every time and then just freezes and shuts off, then restarting and prompting me to a thank you screen from gateway and to hit any key to restart. then i get a message about boot media after restarting. and the process goes over and over and over. someone please help me and point me in the right direction. is it my hard drive? or should i trash and get another. dont want to.