Laptop after rebuild reboots only to black screen.

I rebuilt a Toshiba Tecra laptop (booted to XP CD, deleted the C: and D: partitions and created one large C: partition, did a quick format, and loaded Windows XP). After doing this everything appeared to load OK and I was able to boot on into windows and start with the driver installs (did not actually load any drivers yet though). Now when I reboot the laptop it will shut down and just go to a black/blank screen. I have to hold the power button in until it completely shuts down and then boot it up again. I am able to shut down with no problems. I have a Compaq 8510p laptop that is doing the same thing. I used the same CD and followed the same steps. Neither PC was doing this before the rebuild. I have flashed the BIOS on both the laptops with no success. I'm at a loss. Any help would sure be appreciated.
BGD302Asked:
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BGD302Connect With a Mentor Author Commented:
weirdest thing...i installed all the windows updates and the problem went away. I have no explanations :( I am glad it is working now though, thank you silemone.
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silemoneCommented:
can you even get into safemode?
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silemoneCommented:
try booting from xp disc and do a repair...
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BGD302Author Commented:
silemone,

I can boot the system up fine outside of safe mode, the problem is just when i go to reboot it shuts down and acts like it's going to reboot and the screen goes black and never restarts. The power light is still on, but it just never boots back up.

I booted to the XP disc and did a repair and I am still having the same problem. I'm thinking that after loading XP it removed something with the internal disc controller software and is what is causing this. I'm not sure how to fix that issue though.
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ridCommented:
Perhaps you should go through your BIOS setup in detail, looking for anything about power or power management that seems odd. After flashing the BIOS, did you do a reset to factory defaults?
/RID
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silemoneCommented:
I'm a bit confused...

1) is it booting into windows and then shutting down and then trying to reboot, but then hanging, meaning you never get to stay in Windows

2) or is it a situation where you've been on the computer but if you want to restart, that's when it hangs?
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BGD302Author Commented:
silemone,

sorry if i wasn't clear...it's #2. everything works correctly except when you try to reboot the laptop. I can bring the laptop up and work all day with it, but the only issue is if I have to reboot. After it shuts down and there is that small pause before booting back up where the system display is black, that is where it stays. I don't see the BIOS display or anything before it goes to the blank screen.
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BGD302Author Commented:
rid,

i looked thru the BIOS and nothing looked out of the ordinary. after that i set it back to the defaults without success.

to add to the oddity of the situation, i ran some windows updates on the laptop and got the prompt to reboot after the install. it was able to reboot with no problem. If I manually go to START--> TURN OFF COMPUTER---> RESTART it will hang everytime. i wasn't aware there was anything different regarding the two reboot processes, but evidently there is.
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ridCommented:
It isn't, like, hibernating or something, when you have to do the hard reset? Can you try just go to the "blank screen" stage and then close the lid, wait a minute and then open again? (long shot here...)
/RID
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BGD302Author Commented:
rid,

unfortunately, that's not it. once it goes to this black/blank screen I still have my battery, AC Power and Power button lit up on the front of the laptop. there is not hard drive activity light and it certainly apprears to have gone into a power saving mode of some sorts, but i don't believe that it is. something is not launching on the reboot process that does when the power is pressed from the off position. i am going to see if it will boot to something different other than the hard drive on a restart. that may help me figure out if there is something with the hard drive controller. i will report back.
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silemoneCommented:
wow this is notorious for Toshibas...can you do a restore?  


Read this:

Due to the corruption of windows boot sector so that the windows was unable to load boot files. So that it hangs up.


Solution:

Reinstall
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silemoneCommented:
but your computer is still working so i'm thinking a restore should do it instead of a reinstall...
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silemoneCommented:
ouch...thread getting long...forgot his is a complete rebuild.....hmmm...
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silemoneCommented:
many welcomes...just glad you have it working...
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WhyBeeCommented:
Wow, i've been going crazy the last couple days because my brother's PC is having the exact same issue and I haven't been able to find a solution.  I tried reinstalling windows on a formatted existing partition.  That didn't work.  I tried deleting the partition and recreating it and that didn't work.  I tried going into the recovery console and used the commands "fixmbr"  (funny thing is that everytime I used fixmbr, it told me that the mbr was not correct) and "fixboot" and that didn't work.  I'm going to just go ahead and use all the latest windows update and see if it fixes itself like it did for BGD302.

This is happening on a PC and not a Toshiba notebook either.  It was fine until we decided to reinstall windows.
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WhyBeeCommented:
So I did full windows update and installed all the drivers on the PC.  Still having the issue where Windows XP won't boot if I reset the computer.  it'll boot fine if the PC is turned on instead of being resetted.
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