I've done some research on this and I haven't found any really good suggestions. Here's the summary:
- HP dv9000 laptop with Vista (updated regularly).
- No recent changes - was working fine
- Put it into hibernate mode
- Tried to restart it the next morning and it woudn't start. All the lights would come on, there was on brief flicker of the HDD light and then not too long after the machine would shut down and then almost immediately try to start again. It just keeps going through the same sequence until I shut it down. The screen stayed black.
- Tried all the easy stuff: tried disconnecting the power and took out the battery and let it sit for a while. This worked in the past when I had a similar problem but no luck this time. Tried alt-ctrl-del, F8, del, esc and every other Fn key but it won't break out of the situation it's in and go back to the boot sequence. I tried putting in the (Neosmart?) recovery boot disk and it seemed to read it but nothing different happened. I swapped the memory sticks but that didn't change anything.
I suspect that the hibernate file is probably corrupted. I'm thinking of getting a new disk drive and starting over (and then see if I can read the current drive as a second drive). It seems a little bit extreme but I don't see a better way out of this. I could send it to HP who will probably charge a fortune to do something similar.
Anyone have any better ideas on how I can force it to boot (or any other useful suggestions)?