Hey guys. I'm getting a DISK BOOT ERROR INSERT SYSTEM DISK message after switching a new power supply and CD-ROM drive into my old computer. I'm attempting to repair or reinstall Windows, but it's not reading my HDD as existing. I've tried switching IDE cables and changing things around in the BIOS, but to no avail. I know the HDD is fine because I tested it in another box, but whatever I do, the HDD won't read. Any suggestions?