Sorry I wasn't more specific. It was late, I was frustrated and I just hit the high points.
Here's the situation: My system is high-end HP Pavillion with quad-core AMD Phenom 9550, 6 GB RAM, Vista Home 64.
I had just finished installing new Trend Micro Internet Security Pro and OKed reboot. It sat for almost 10 minutes with black screens and, after about 5 minutes, no disk accesses. I did hard re-boot and system came up in Safe Mode with the left (primary) display stll dark. I used Restore to go back before the Trend Micro install - no joy. I ran diagnostics and got the BIOHD-4 error code.
I discussed problem with one of my techs at work. His only suggestion was to wipe HD and reload Vista.
I googled the error code and found your forum. I downloaded EasyBCD 2.01 and tried to use the guide you wrote back in 2006 to fix the MBR. The screens didn't match your guide - but I tried a few things that seemed to be close to what your guide directed. Problem still exists.
This PC is extremely important to my daily work as is the 8GB of structured data on the HD. I will wipe the HD only as a last resort. I have a 16GB Flash drive that should handle all the files I need. I'm not sure that any backup routines will work. I can access control panel, but none of the routines work.
The Pavillian is about 15 months old - shouldn't be an HD problem. Also, I do not dual-boot.
Obi-Wan, you're my only hope :|
JRH