how do I uninstall xp pro os using the BIOS

February 3, 2011 at 16:39:46
Specs: Vista downgraded to a xp but dual boot system, 2
i want to uninstall windows xp pro sp2 from a compaq notebook that schools use. It originally came with windows vista and we downgraded to xp. Now I cannot use disk to do it because it downloads files at installation point tells me I have no hd drives. and I have to restart and try again.

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February 3, 2011 at 16:49:00
"How Do I Uninstall Xp Pro Os Using The BIOS"
you can't

"Now I cannot use disk "
what disk are you using??


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February 3, 2011 at 17:34:26
the windows xp pro

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February 3, 2011 at 19:08:13
You need to go into bios......setup.... and make sure the hd is recognized.
You also need to make sure the cdrom is the first boot device.

From your post you have xp pro. You can uninstall by just formatting. What OS do you plan on installing?

Do you own the machine or is it still the schools?

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February 4, 2011 at 12:07:34
the laptop is a compaq 6910p .
My teacher downgraded her laptop from vista to xp. She hit the wrong key and never deleted the original vista os so now its a dual boot. Now when I put the xp pro installation disk in to reinstall it will boot to cd and when it gets to the continue screen where it says hit enter to continue R to recover and f10 to quit, I hit enter and it tells me that there is no hddrive.
I also cannot get into vista because she do not remember admin password. She also has no disk to uninstall vista, I used Hirens boot cd to change password but it does not work nor does it work by making it blank! How do I retrieve password without having to go into vista OS.

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February 4, 2011 at 12:10:18
You get no disk found due to not loading the driver by hitting F6 when you see it in the lower left corner.

Go to the computers web site and download the drivers.

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's

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February 4, 2011 at 12:32:06

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February 8, 2011 at 06:49:57
how do i know which drivers to download?

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February 8, 2011 at 09:23:25
This is almost certainly down to the bios being set to use the sata drive in AHCI mode (rather than IDE or legacy mode). XP install CD cannot natively see such disks and you can't introduce them by using F6 key as laptops don't have floppy drives any more. You need to get into the bios settings (probably F2, F1 or Esc key on Compaq - should say on screen before windows starts) and change the setting (from AHCI to IDE or lagacy or similar), save the bios settings and try again with the XP install CD (assuming this works and XP installs you will also need to go to HP site to download the drivers windows doesn't have, probably chipset, graphics sound and network)

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February 10, 2011 at 07:14:17
will it uninstall xp this way? My teacher downgraded laptop frfom a vista to a xp never deleted VISTA so now she wants to uninstall it. So it is a dual boot on the c drive (vista and xp).

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February 10, 2011 at 12:03:42
"how do i know which drivers to download?"

They're in the downloads for the specific compaq model on the HP web site.
Or, if you have a disk with drivers on it for the model that came with it when it was new, they would be on that.
Something with a description that says SATA drivers for a floppy disk, or for when you press F6.
For XP, the floppy drive usually must be built into the computer - the files initially loaded by the XP CD cannot recognize most USB floppy drive models, unless the model is an old one that was available when XP first came out circa 2001. The XP CD cannot recognize the SATA drivers source being on anything other than a floppy disk, unless they've been integrated into Windows on a "slipstreamed" CD you have made.
(The Vista or Windows 7 DVD is able to recognize the SATA drivers source being on other things such as a flash drive.)

If the computer does not have a built in floppy drive, the second method at mickliq's reference is the easiest solution - then you don't need to install SATA controller drivers in order for the XP CD to find the SATA hard drive. You can install the SATA controller drivers after Setup has finished, then change the bios setting for the SATA controllers back to SATA or AHCI mode.

"will it uninstall xp this way? My teacher downgraded laptop frfom a vista to a xp never deleted VISTA so now she wants to uninstall it. So it is a dual boot on the c drive (vista and xp)."

When you boot the computer from the XP CD, the dual boot choice will not appear.
You delete the existing partition the buggered up XP is installed on, then make a new partition in the un-allocated space made available by doing that,then you continue on and run Setup.

If you want to get rid of the Vista partition and all data that was on it too, delete all partitions before you make at least one new one, and then you run XP's Setup.

When you have only one hard drive...

Windows Setup defaults to making only one partition on a hard drive (or, a brand name software installation usually has only one visible - in Windows itself - partition on the single hard drive) .
The problem with that is if you ever need to re-load Windows (or the original brand name software installation) from scratch, you lose everything on the partition Windows was installed on, and when you have only one (visible) partition on the hard drive, that's everything on the drive - unless you copy the data you don't want to lose to elsewhere BEFORE you install Windows from scratch (most people don't bother, and lose all their data) .

If you're installing XP from a regular CD, it's recommended you make at least TWO partitions on the drive.
How to make more than one partition on a hard drive, when you're installing Windows on a blank hard drive, or when you are deleting the existing partition(s) on a hard drive before you run Setup .....
See Response 3:

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