My brother's computer just randomly started freezing erratically. It'll run fine for about half and hour and just freeze. It wont respond to anything, and I have to hard reboot it. Lately it's been giving out hard drive read errors during boot before it loads the OS. Usually if I just reboot that goes away though. I dont think the hard drive is a problem though since it's brand new. The computer is a 2 year old Dell. Anybody know what could be up?