Windows log in password issue for dell xps m1210

To determine if your hard drive is bad or good, run the Dell diagnostics.
Here is a link for the owner's manual of your model:
ftp://ftp.dell.com/Manuals/all-products/esuprt_laptop/esuprt_xps_laptop/xps-m1210_owner%27s%20manual_en-us.pdf

go to www.bios-reset.com they can help

the best way and most recommended solution is using the website called www.biospro.com they have unique bios and hard drive password
to solve all dell password problems such as:

**** This computer system is protected by a password authentication
xxxxxxx- 595B, xxxxxxx-2A7B, XXXXXXX-D35B



**** System Disabled 12345

*****DELL UNLOCK KEY HINT

*****ACER UNLCK KEY HINT

****DELL XXXXXXXXXX - 1D3B

****DELL XXXXXXXXXX - 1F5A

AGAIN THE WEBSITE IS CALLED WWW.BIOSPRO.COM

www.dell.com

drivers and support icon

BIOS passwords are removed by removing the CMOS battery temporarily from the motherboard. Windows passwords are reset with this CD: http://www.howtogeek.com/howto/windows-vista/change-your-forgotten-windows-password-with-the-linux-system-rescue-cd/

I'm thinking you might be having a hard drive problem or the file structure is really messed up.
You had Win 7 and tried to install Win XP. Now it is confused, no doubt.
Here's the first thing I would do:
Put in your Win XP disk and boot from it.
At the first question it asks (about repair or install) choose repair.
It will then ask you which Windows Installation--choose #1 if it's there.
Hit enter if it asks for your password.
Now at the command prompt, type chkdsk /?
Depending on your version of XP, it will show you the switches you can use. Use the one that checks the entire drive. Might be chkdsk /P or maybe /F
Anyway, use the one that does the whole drive and let it run. Then try your reinstall unless you have file problems that aren't fixed.
BTW--your Dell should have a utilities option if you hit F12 at startup that will allow you to check your hard drive.

that's an OS problem, or malware. If you're running Windows, try to boot into safe mode (press F8 and choose "safe mode" or F5) and see if you get your desktop back. You can go directly into recovery mode from the F8 boot mode selection menu also.

If the distortion happens inside windows, this is a graphics driver issue but, on the other hand, if this happens before Windows or outside Windows, this is a video card problem

This is a known vista issue where it creates a backup of your profile for some reason there registry edits to try and fix it but a system restore is much easier. Follow the below steps to solve problem.

Turned computer on and immediately pressed F8 repeatedly until I got "Advanced Boot Options" select "Safe Mode" computer then opens safe mode login as admin if possible, with a "Help" window, in the help window there is an underlined "What is System Restore?" then select "Click to open System Restore" restore to a previous state before which the fault occurred.
Click OK and after config changes should be good to go.