I had previously posted about this problem to which I thought I had resolved, but definitely hadn't. I installed a Western Digital HD in a HP 8755C with ME on it. After installing I booted up to reinstall the OS with my ME recovery discs that came with the PC when I bought it. However, the PC won't accept the discs at all! I just get the "operating system not found" message displayed on a black screen. Can I purchase a XP cd-rom and install instead of having to place ME back on it?. What should I do from here?