Recently i had to change a motherboard, processor and memory out of a system. Since i did not have anything to can back-up the files on the hard drive i just put it to cable select and started the computer up. The hard drive is a Maxtor 40gb IDE drive. When i started up the computer to check if it was coming up ok, it did so i just said to myself that ok its finished. The next day i turned it on it came up saying that Boot Failure please insert system disk cd rom or something like that. I restarted it and after 3 restarts it came up. During this time i noticed that i would show that the hard drive was not being detected just the cd drive and it was on that 3rd restart (no corny lines about 3rd times the charm please ) that it came up. So it seems to need a restart before it detects the hard drive. So my question is, do i have to re-install the OS in order for it to work properly or do i just need to change the hard drive as well? :confused Thanks in advance.