I'm trying to re-install windows on my system, but I can't get into set up to boot from a disk without a password. I was not given a password or any information like that with the computer. How do I find out what the password is to enter the set up?

Three methods are provided for you here.
One: Recover Windows 7 password with bootable USB password reset disk
There are two ways to create Windows password reset disk, one Control Panel provided by Windows 7 system, the other is iSunshare Windows password Genius.
First, Download, install and run Windows password Genius on an accessible computer.
Second, Insert USB into computer, and choose it as password burning disc.
Third, Click "Begin Burning" and until the message "Burning successfully" pops up, it means you have created USB password reset disk.
Fourth, Insert boot USB password reset disk into your your locked Windows 7 computer
Fifth, Boot it from USB disk or Removable Devices.
The operational details, please go to how to set your computer to boot from usb drive.

Two: Reset Windows 7 password with Chntpw USB disk
Reset password with Chntpw is also like iSunshare Windows password Genius, which can create password disk with CD or USB. The main difference between them is the process of Windows 7 password reset. Compared to Windows password Genius, Chntpw is more complicated. More details, please read how to reset Windows 7 password without reset disk

Three: Another Administrator Login Windows directly without CD/USB
Of course, if you want to reset Windows account password by this way, there should be more than one admin account for your computer and you remember one of it. Then this way would be the easiest and most convenient way to reset lost or forgotten Windows password.
Just press Ctrl + Alt + Del to change login account on the Windows login screen, and type correct logon Windows password to enter Windows.
More details from:
http://www.isunshare.com/windows-7-password/how-to-recover-windows-7-password-without-cd.html

Windows operational system locked always leads to Windows 7 not boot from hard drive completely. Actually, that just need you type correct password to login Windows 7. However on this occasion, only password reset disk or password recovery could help us remove locked Toshiba Windows 7 password.

1. Remove Windows 7 password with reset disk
When you type incorrect password, the window will prompts you that Reset password. Click the link to begin password reset with disk.
Following the password reset wizard, you can easily reset Windows 7 password with boot disk.

2. Remove Windows 7 password with password recovery software
Step 1: Download Windows 7 Password Genius from Internet.
Step 2: Install and run it on accessible computer.
Step 3: Take blank USB disk and insert it into accessible computer for password reset disk burning.
Click "Begin burning" to create a Windows 7 password reset disk. Exit USB disk from the computer when you see the message "Successfully burning".
Step 4: Plug USB reset disk into locked Windows 7 computer, set it boot from USB device.
Step 5: When Windows 7 Password Genius program runs in WinPE, choose accounts and click "Reset password" to remove these accounts password to be blank.
Reboot locked computer and it will boot from hard drive successfully, without any login password anymore.

Do not worry, we can use dell password recovery tool to complete this task. Windows Password Rescuer is designed for resetting dell Windows 7/vista/XP password. What you should do is prepare a bootable CD/DVD or USB drive and a computer you have access to. Follow four steps help you reset dell windows password without lose anything:
Note: You also can use Windows Password Rescuer to reset Windows 2008/2003/2000 local or domain password easily by these steps on dell computer.
Step 1: Download and install Windows Password Rescuer on another computer you have access to.
Step 2: Run the software to create a Windows password recovery disk. You just need to burn it to a blank CD/DVD or USB drive.
Step 3: Insert the Windows password recovery disk to your dell laptop or dell computer, and set the computer boot from the password recovery disk by BIOS setting. If you have trouble in BIOS setting, refer to:
How to set computer boot from CD/DVD.
How to set computer boot from USB drive.
Step 4: After boot from the password recovery disk, Windows Password Rescuer will start up and display a friendly operating window. Then you can reset whichever account password of your dell computer just by a few clicks.
You also can use Windows Password Rescuer to create a new user with administrator privileges for your dell OEM Windows without login. With this new user, you can login your dell computer directly and access control panel to reset other user password.

OK ..you have several options ...First ..try to open it up ..and remove the bios battery from the main board..remember to also remove any other power source ..and place the battery back after 30 seconds..This will clear the bios settings and also the password..
If this will not work , you can try to fool the system by inserting the disk ..and start without the hard disk on ..It will take teh next option and will boot from the disk ..and you have to plug the hard disk on immediately ..It may work ..
If the password will be removed by removing battery ..than all you have to do is press f12 for boot menu and start from the disk and install .

Another way is to start windows installation from teh previous windows ..Just open the disk and click set-up ..or install windows..it will start from windows and after loading primary files will restart and continue normal ..
the last option is to remove the hard disk and install a clean operation system in another computer and place it back ..
it will work just fine ..but you will need all drivers for your computer to be installed manually and will also need to be made from a boot-able disk ..and not from recovery ..
Anyway ..try the battery removal and let me know what goes on ..and after that we'll see ..
please try to use English ..even if it is not very good...I will try to understand..

Well, I am providing you four tips which you can consider to recover Windows administrator password if your forgot or lost it:

TIP 1 - Use password reset disk

Windows-based system was designed to be able to create windows password reset disk without any other third party tools. So you can make use of a password reset disk to reset your Windows password in case you lose or forget your Windows password.

TIP 2 - Restore the operating system

Windows password recovery can be performed by restoring the operating system. Since restoration leads to data deletion, the solution can only work if you have a clean and updated backup of your hard drive data stored somewhere else.

TIP 3 - Use Windows Boot disk

The boot CD for Windows can be used to reset the administrator password. This disk enables you to repair Windows OS, thereby, setting your administrator password as blank.

TIP 4 - Use password recovery software

This is considered as the best windows password recovery solution, however, is to download a third party software. These tools enable you to reset Windows administrator password without posing any threat to your hard drive data. Among so many password recovery software, windows Password Recovery 6.0 is an easy-to-employ application which can be used to reset lost or forgotten password of any Windows system. Now execute the following steps to recover your lost windows password if you haven't prepared anything.

Step1: Login to a computer that can link to Internet. Download Windows Password Recovery from

http://www.recoverlostpassword.com/products/windowspasswordrecoery.html and install it on that PC.

Note that: there is an .ISO file. Burn the .ISO file to a CD/DVD or a USB flash drive

Step2: Get out the newly created CD/USB and insert it to the locked computer.

Step3: re-booted the locked computer (it's necessary for you to change your computer's Setup to make it boot from CD drive or USB drive) and then followed the process of instructions. Just a few steps, the old passwords were removed.

Step4: logon PC without password and setting the new password

If you have lost or forgot your password then assuming that your Operating System is Windows you can find many freeware software on internet to download which can crack your password and open your windows most of the time without any data loss or software corruption. The good part is that you do not have to format or reinstall your operating system.
I will recommend you this software download from the following site

http://www.recoveranypassword.com/recover/windows-password-recovery/

Copy paste this link in your Browser and download the software on another computer. This software will make you a boot able CD/DVD after that you mount this disk on CD/DVD drive on your Dell Inspiron 9400 and allow your computer to boot from it. If the computer is not booting from the CD/DVD. Restart your system and start pressing "F2" and "Del" keys to enter BIOS setup once there change the boot priority order to CD/DVD drive so that the disk boots before the Windows in your hard drive. Once your computer loads the software in the CD/DVD you can break the password and enter the windows. The general procedure for password recovery is the same as I have described above. If you face any problem with the software I am recommending you. You can have another software that suites your taste by searching through Google or any other Search engine. As I have said the procedure remains pretty much the same.

Good Luck!

Bios or windows ? Please tell us more info!

Such as BIos password,
1. Discharge to the Board
2. use BIOS/CMOS Password Recovery Tool from http://www.biospasswordrecovery.com/

Such as windows password,if you forgot that,you can try some reset password tools,I know three tools.
1. "Windows Password Recovery Tool 3.0"
http://www.windowspasswordsrecovery.com
2. "Windows Password Key 8.0"
http://www.lostwindowspassword.com/
3. "Windows Password Recovery 6.0" http://www.recoverlostpassword.com/

Help you to reset windows password if you have forgotten your password.

Here us a good link to create a 95 boot disk

Hi there.
First of all delete any passwords that protect the account and any users that you don't want (not your own)
Then, Right click on my computer and select "properties" tab, then you want the advanced tab and then "startup and recovery" tab and then the "edit" tab. You should see something like this >>>
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect

It should look like this so delete the second string and save:

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect

Restart the PC and it should boot straight into windows

Good luck and thanks for using Fixya!!