Yes, I did a full system restore and nothing changed. Diagnostic check (F2) showed no hardware problems either. In addition to all the steps I listed, I flushed the BIOS by removing the battery, unplugging the power cord, holding down the power button for 10 seconds to drain the power supply, then let it sit overnight before putting in the battery and trying again.. Just for good measure, I reset the BIOS to "Default" settings. This is something you might want to try.
I'm hoping some of the smart folks in this forum will jump in with more suggestions and possibly a fix based on a similar problem. No one yet!
I wonder if anyone can diagnose the fault messages I get in bluescreenview.exe, then. The guy at HP SmartFriends, who did all the scanning of my system and then thought he was done, when asked about that, after he looked, then said that my system needed to be reinstalled from scratch. Maybe that was just a stock answer?
Anyway, I'm keeping my eye on this thread to see if anyone else chimes in as well. I suppose I should do some other searches to see what I can find too.
In any event, thanks for your input. Now I know I needn't waste my time backing this thing up to its initial existence and then reinstalling and updating and upgrading the software all over again.
Still, as of this writing, I have not had a blue screen and/or inability to boot up since last week, so I guess I'm just crossing my fingers.
This thread is over a year old and I am wondering if anyone has arrived at a definitive cause of this problem?
I experienced this problem one year ago, a few months after this thread, and ended up sending the machine back to HP for a motherboard replacement (out of warranty, I had to pay for it.) And the HP reps I spoke with were very helpful - surprisingly so - it was one of the best customer service experiences I've had. (thanks, HP).
The machine worked fine for one year, until just this past week, and the problem resurfaced. I just updated the BIOS, so we'll see if that has an effect, and putting in a new video card (the machine got out of the cycle and booted when I removed the video card - maybe that is the problem this time).
Last year I replaced the PSU and replaced the memory cards and nothing worked consistently until I got the new mobo.
Also, here's another interesting fact: the short boot cycle failues lasted 4.5 seconds and the long boot cycle failures lasted 32.5 seconds. This should tell us something, but I'm not sure what.
I'm seriously considering a new mobo from a different manufacturer and rebuilding my whole machine. There is seems to be a designed in manufacturer defect in this one.