I have an old ThinkPad R40 family laptop running Windows XP lying around and there's an account on it that has a password and it gave me a hint and I put everything I could possibly think in there and no luck. Is there any way to bypass the password?
You can boot in safe mode an then try to reset the password.
Once you enter in safe mode you can go to Control Panel > User Account > Change Account.
Or in a command line window and type the
net user [account name] [new password]
net user administrator password
If that's not possible, you can use a Linux live CD and boot with it. Mount the windows drive and use the chntpw to change the password.
sudo chntpw -u "USER NAME" SAM
Change or empty the password located in
%SystemRoot%\system32\config\SAM using external tools like the Offline Windows Password & Registry Editor bootdisk.
As this is Windows XP (EOL since April 2014), a better approach would be to backup the files e.g. with a SATA to USB adapter and then nuke the system. Password for the OS user doesn't protect the files.
Try the first answer by Hugo first (most XP machines weren't set up properly so that usually works)- if it doesn't work here's another option
Iv'e done this a lot by using the sethc file to bring up the command prompt before login
It works by replacing the sethc.exe (sticky keys) file in c:/windows/system32 with the command prompt (cmd.exe)
There are a few ways to do it - the most simple one is this, if you don't have a repair disk google "sethc hack windows 7" for other ways like booting into linux, this works with every version of windows (except windows 10 when it has been linked to your email account, otherwise it usually ok with windows 10 too)
Once the sethc.exe file is replaced with the cmd.exe file (however you did it) simply boot windows as normal, when you reach the login screen keep pressing the shift key until the command prompt appears. Type
net user [username] [new password] and hit enter, you can now login with the new password