I have a HP m1080n Media Center computer. I thought I did a successful 'Repair', using non-proprietary CD'. The CD/repair was successfully reactivated during the 'Repair. My problems started when I noticed I had no DVD drives shown in my file manager. Then I found that I had no 'Safe Mode' (F8) available. There are no USB drives, also. The USB wireless mouse and keyboard work OK. I was able to see one of my DVD' when I deleted it in the Device manager and it automatically reinstalled itself, however the DVD drive is no working. The BIOS shows all the devices mentioned above properly, however, the problems go on and on. Help would be greatly appreciated. Marvin