Asking for a password without one set

If you are using WINXP, right click on the open desktop. From the pull-down menu, select PROPERTIES. From the PROPERTIES window, select the SCREEN SAVER tab. Uncheck the "On resume, password protect" check box. If you are using WIN 7, go to CONTROL PANEL, then APPEARANCE and PERSONALIZATION, then PERSONALIZATION. At the bottom, select SCREEN SAVER. In the SCREEN SAVER SETTINGS window, uncheck the "On resume, password protect" check box. This will allow you to wake up from screen saver without having to use password.

it should allow you to change password

Are you asking how to set a new password on your windows based computer? There are a few different ways you can do this depending on which version of windows you have, but without any details I can only take a guess what will work for you. Try this: hold down "cntrl + Alt + delete" from the login screen. Click the button in the screen that pops up that says "change password". If that doesn't work post in the comments what type of computer you have and what operating system you're running.

If you want to create a new Basic Input/Output System (BIOS) password on a Dell Optiplex 745, reset the password. Resetting the password also applies if you want to remove an existing BIOS password. BIOS passwords are used to add an additional level of security to your machine. Without the correct BIOS password, your Dell Optiplex 745 will not complete the boot process. The password can be reset whether you know your current password or not.

Turn off your Dell Optiplex 745. Start the computer. Press "F2" the moment the Dell logo appears on the screen. You will only have two to three seconds to press the key. Enter your BIOS password. Navigate to the "Exit" screen. Select the "BIOS Password" setting. Enter your BIOS password and a new password if desired. Do not enter anything in the "New Password" box if you want to remove the BIOS password completely. Press "Enter" to save your password settings. Reset Forgotten Passwords Turn off your Dell Optiplex 745 and remove the power cord from the computer. Disconnect any external hardware and cables. Slide the release latch located on the back of your Optiplex 745. Lift the cover as you slide the latch. Hold the cover firmly and pivot it back on the hinges. Remove the cover from the hinges. Find the "PSWD" jumper on the motherboard. This is a two-pin jumper and should be clearly labeled. Use a flashlight and magnifying glass if you have trouble locating it. Remove the jumper from the motherboard. Replace the cover and slide it into place until the latch snaps into place. Reconnect the power cable and restart your computer. Shut down the computer after it has completely restarted. Disconnect all cables and remove the cover again. Replace the PSWD jumper. Replace the cover. Reconnect all cables and restart your computer.
b> Clearing forgotten passwords http://phubner.eng.ua.edu/Files/Optiplex 745/advfeat.htm - wp1117484

You should try www.unlockbiosrecovery.com and for $20 they will send you a bios master password that will clear any bios passwords set. I use them in my laptop repairs quite often.They also unlock hard drives on laptops for most brands.

Oh be care full here some systems will only allow you a certain trys at entering the password then they will just stop functioning.Try moving on without entering a password at all(blank box etc)'
Good luck
Davey Snake!!!

The bios password only appers when you press F2 or Del upon powering it ON, so don't press anything when turning it on.

the bios password can be reset and remove its previous password by opening the laptop and remove the CMOS battery inside it, not the physical battery of the laptop, the CMOS battery is a 1inch round battery inside a laptop and computer.

Hi there

The black screen that appears before the booting asking for password shows that you have activated security password through BIOS settings.

If nothing is working implies that you don't remember the password or activated it accidentally.

The only solution to your problem is to get into the BIOS settings an deactivate the security password or reset the BIOS settings.

thank you

all you have to do is pop out the CMOS battery...its a small (bout the size of a quarter) button cell battery inside your computer...if you dont know how to get to it repost your computer make/model and ill look up your manual and find it for you...

Sounds like you have a boot/hard disk password. You need to contact who ever set it to find out what it is.