Well i can tell you that the HD is error free, ill do those diagnostics right now just be to sure.
H-m-m-m, if you're convinced that the drive is fine but yet you're getting a immediate blue when it boots up.....did you check the bios settings on the machine?
First thing you need to do now is check the SMART its a quick and easy thing to do, go ahead and get that done.
Second unplug the hard drive and boot the machine with UBCD not UBCD4Win, this will tell you if any hardware other than the hard drive maybe damaged.
Was "Disable automatic restart on system failure" not available or just didn't work?
After you ran chkdsk /r and it fixed the problems did you run Fixboot and Fixmbr?
I ran a SMART Diagnostics(took about 2 minutes) and a Full HD Diagnostics ( 28 minutes) from UBCD and they both gave me No Errors. That covers why i was so sure about this.Bios Settings are the same , i even reseted them to default and still nothing.
And all the F8 Menu options are there including "Disable automatic restart on system failure" , i tried them but non of them work.
I'm not asking this to be a smart aleck, though everyone will probably read it that way...but...whatever. How long have you been doing this? Hard drive problems are very commonplace. Each and every system that we check-in to our shop for diagnosis always has a general hardware diagnostic ran on it, before we start messing with software. Hardware problems are frequently the cause of blue screens.
You really need to start using, and be aware of when to use, hardware tests. Chkdsk is *NOT* a hardware diagnostic. It's a filesystem utility...anybody that would tell you to use chkdsk to verify the hard drive is misinformed. If the hard drive is failing and you reload windows and got it up and running, that's very much only a temporary fix. You could have only "fixed it" for a matter of weeks, days or hours.
Its all good , your just asking a question. I did this on the side for almost 5 years , i worked as computer tech over seas for almost a year. But i made it as a primary job a few months back , i operate from home and %99 of my customers come through referrals , my work is just perfect and people always recommend me, im planning on moving into a store front soon. Personally i haven't seen a lot of HD Problems , mostly regular errors but thats easy but nothing this bad.I know that Chkdsk is not a diagnostic, i just ran that to see if it would fix the problem.
Thanks to iptech for mentioning that some of the Dell systems use a non-standard MBR because this system is an old Dell so good thing i didn't use the fixmbr.