Hi. I've got a huge problem with my PC. I was installing a new hard drive and now the PC won't POST at all. My spec is: ASUS A7N8X Deluxe rev2 (v.1.007 BIOS) 1024MB Corsair PC2700 DDR333 (2x512MB) Hercules Radeon 9700 Pro 128MB Maxtor Diamond Max Plus 9 120GB 7200rpm 8MB cache (Parallel ATA) DVD / CD-RW combo I've had the new hard drive working fine, and it's formatted with Windows XP Home. My problem is that I turned the PC back on after doing a few tweaks, and it wouldn't POST at all. There are no report beeps to say that the graphics card isn't seated properly or anything like that, and the monitor says there is no connection. I've checked all cables, and reseated the boards just to be sure. I'm stumped. I wondered if the PSU was not powerful enough to run everything, so I removed the hard drive and DVD / CD-RW combo so that just the graphics card was running. I got nothing again. At this stage I thought it was my graphics card that had gone faulty, so I took the GeForce out of my old PC and tried that in place of the Radeon, but that wouldn't work either. I've tried clearing the CMOS many times but that doesn't help, and I've checked the jumpers on everything. Nothing works! I am good at using PCs, I've built 5 or 6 and never had this problem before. I've narrowed the problem down to the motherboard because I've used a differnt graphics card, removed the IDE devices and the PSU works because when I turn the PC on the fans start and the green LED comes on on the motherboard itself. Has anyone had a similar problem to this? Is my motherboard fried? If that's the case it can go back because it's still under guarantee.