Ok so recently i wanted to speed my computer up and i did a disk cleanup with vista and then when it was done all my programs were gone, everything. I was forced to restart my computer and when i restarted i got the this error.
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Windows Boot Manager

Windows Failed to start. A recent Hardware or software change might be the cause. To fix the problem:

1. Insert your Windows installation disc and restart your computer.
2. Choose your language settings, and then click "next"
3. Click "repair your computer"

If you do not have this disc, contact your system administrator or computer manufacturer for assistance.

File: /windows/system32/drivers/nvstor.sys

Status: 0xc000000f

Info: Windows failed to load because a critical system driver is missing, or corrupt.

ENTER=Continue ESC=Exit

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The slashes are the other way,im on my brother labtop and im not used to the keyboard. Also i'm not sure if those are zeros or the letter o.

I've tried putting in a Windows 98 Bootcd and i get a error that says,

1. FD 1.44MB Sytem Type-(00)

NOTE: I do not have the windows vista disc or any other vista disc, it did not come with it also the hp site for help is down. Also i want to install Windows XP Pro on it because i am tired of vista eating all my memory.

Hi
Can you post your system Specs in your profile (My PC Specs) please so users know what were dealing with. Click the Belarc Link in my signiture.

If you get a retail package of XP pro you will need it by the end of this month as you might know MS are cancelling it at the end of June.

Also if you have in built system recovery (Press F11 or recovery button at POST) use that.

Well, i can't do any test to get the exact specs of computer because i can't do anything on my computer atm. Right now i am on my brothers labtop. From what i know the specs are..


Processor
AMD Athlon 64 X2 Dual-Core Processor 5000+ Operating system
Genuine Windows Vista Home Premium Memory
3072MB PC2-5300 DDR2 SDRAM Graphics card
Nvidia GeForce 6150 SE Hard drive
400GB



Got that from the Hp site (a6130n)

Hi you will have to boot into recovery console and do the following:HP and Compaq Desktop PCs -  Using a Recovery Console to Resolve Startup Issues 

Please read very carefully.

I should have mentioned that when i put in the Windows XP Pro cd that it says "Setup is inspecting your computer’s hardware configuration" My computer just restarts.

You cannot just downgrade from Vista to XP.You either uninstall Vista using Vista DVD first then install XP.

Or create a dual boot Vista/XP then uninstall Vista.

Or you will have to remove hard drive and fit as a slave to another pc and format as a slave for storage and replace into origonal pc.

Or borrow/buy if you do not have them already convert cables or external hard drive case to convert internal hard drive to external.

The problem you have is there is no downgrade path to downgrade Vista to XP.