I have a seriouse problem with my computer. Whenever I tried to boot Windows XP i got to the loading screen with the blue laoding bar and then it froze for a second and i got a BSOD. The error was

DRIVER_NOT_LESS_OR_EQUAL
STOP= 0x00000D1

I tried reinstalling Windows. I got to a screen saying "Applying System Settings". This screen froze and after about an hour the computer shut down. I tried reinstalling windows again and got it working but the mouse was unresponsive. I installed the mouse drivers and mobo drivers and restarted but still nothing. I again reinstalled windows and got the "Applying System Settings" problem. I also got another error whenever i tried to boot saying:
UNMOUNTABLE_BOOT_DRIVE

I cant get into safe mode and i have tried everything possible but i can't seem to get my computer working. When i try to boot from the CD it crashes. Here's my system specs if it helps:

CPU: Intel Pentium D 940 3.2 Ghz
Mobo: ECS GF7050VT-M
RAM: Cruacial PC-5300 2 gig 667Mhz UNBUFF DIMM
HDD: Maxtor 4W030H2 30 GIG
Graphics Card: Asus NVidia 8800GS 384 MB DDR3
If you need anything else i'll get it for you.

How does it crash when booting up from CD, and is it specific to windows cds?

If you can boot up with, for an example a Linux cd, then that's good news.

And minidumps/information shown on the blue screen may help.

How old is this computer and the hardware inside?

Your OS stop is explainable as your system has attempted to access pageable memory using a KP IRQL (Kernel Process Interupt Request Level) that is too high. The usual cause of this is a bad device driver which is using improper addresses. It can also be caused by faulty or mismatched RAM, or a damaged pagefile. Worst case scenario, your RAM is failing.

Try this:

• Rearrange your RAM placement
• Update your drivers
• Check the IRQ addresses in the Device Manager to make sure none are out of range or shared

As for your UNMOUNTABLE_BOOT_DRIVE error, this is an issue with either your boot.ini or master boot record. This is listed when the boot loader cannot find the start to the Windows system listed in the boot.ini or when the master boot record cannot access the boot loader. Another worst case scenario, the hard drive is failing.

Try this:

• 1.) Load the CD to reinstall Windows
• 2.) Press R to repair the OS from the recovery console
• 3.) Run fixboot
• 4.) Run fixmbr
• 5.) Check the boot.ini file to make sure the repaired HD is listed

If this doesn't work then I will need more detailed information on exactly what is happening. This would include pagefile dumps, error logs, screenshots, etc.

Computer is pretty new, I built it 2-3 months ago. It crashes from CD anywhere from the main menu to installing windows. When I try going to the recovery menu the computer freezes. I don't know how to check IRQ without booting to Windows. How would I take a screenshot of the error screen. Also, I don't think it's the Hard drive that's failing because I tried booting from another hardrive and I got the same errors. Is my computer just frying all the hard drives I try? Would it be risky to try the RAM in another computer? Would it be risky to try new RAM in this computer? Is there a way to test ram at home to see if it's alright?

I also want to remind you guys that I can NOT boot to Windows.
Any help is VERY much appreciated since I have no other computer to go on except my mom's.

The only way to test the RAM is by installing it into a computer. Your BIOS should tell you how much memory it has detected, if not in the BIOS itself then in the POST. That should tell your if your have the full value of the memory you put in.

It could be your drive cable, reinsert it and see if that works. If not, then if you have a spare cable, replace it. Also try a different installation disc if you can, granted the disc doesn't affect the booting of Windows itself, it could be a bad disc. And if Windows was installed from a faulty CD then it could have written the the hard drive incorrectly, which may explain why it freezes, and a faulty CD can only get worse which explains why the CD could be freezing now.

I know you said that you switched drives, did you install Windows on that drive you swapped with the same Windows CD? If you did then it can only enforce that the CD is faulty.

I solved the problem, my ram was faulty, thanks to everyone who posted. Also, the C is perfectly fine, i used it for other computers and it works so ya thanks to everyone!