I'm completely illiterate when it comes to the inner workings of my computer, so I'm hoping someone here can help me. My Hewlett Packard had to have both motherboard and hard drive replaced when it was seven months old. Now, just over a year later, I'm getting disk boot failures and random crashes. Could the motherboard they replaced have anything to do with this? I've been suspecting the hard drive, but pc doctor 'says' my hard drive is fine. Ran the tests for the motherboard and it passed also, but the combination 'crash' I had first time out has me wondering if the motherboard might be involved again.