Will I have to reinstall my operating system if i have forgotten my adminstrator password ?
478872
I am assuming you have windows OS. In that case, you can always start your system in rescue mode and reset administrator password. Rescue mode allows you to login in single user mode without needing password. Do google search, you will find wealth of information.
672932
Your better off to backup all your files and create yourself a  new administrator account, and delete the old one. Thats what I had to do.
203068
This can be a awkward one – you have various options\n\n1.Try logging into safe mode and logging as administrator – sometimes windows does not assign a password to the administrator\n\nIf this doesn’t work\n\n2.If you have data on the pc that is valuable, try searching yahoo or google for programs that can retrieve your password – but BEWARE these can be very expensive and CAN NOT guarantee to retrieve your password and may corrupt you master boot record or the registry and may stop your pc from starting\n\n3.  If you don’t mind losing your data – you can do a system recovery on your pc.  It all depends on your system if you have a hard drive recovery of a cd/dvd recovery.  If you have a HDD recovery some systems have a option of a non destructive recovery which MAY save your data.  Check your pc documentation – either of these recovery options will delete the password and will restore your pc to as if it has come out box brand new and no password will be applied to the sign in account.  Bit drastic but at least gets your pc working again.
1185510
Usually password protection includes some kind of emergency question.  If you've forgotten your password, there should be a button that says something like "forgot your password?".  Hit that button, and it will either e-mail a password to the administrator or ask you to answer a question or two in order to reset the password.\n\nUnless this isn't your account.  If you're trying to get some other admin's password, you'll have to trick him into telling you or hack the account.  In this case, you either already know how to do it or are supremely incomptetent.  Yahoo answers is not the place to learn new skills.
483505
that sucks, there are a couple of things you can do though, if the information on the computer isn't important, you could reinstall windows at the expense of the data, or since you have a username and password, you should have also set up a admin account...type this address and follow instructions: http://home.eunet.no/~pnordahl/ntpasswd/
975480
No need for some lousy service to retrieve your Password. It's totally free if you do it yourself. Go to the site below and download the Bootdisc. Either burn the CD or write the Boot-Floppy.\n\nStart your PC with this disc and follow the instructions to reset your passwords.\n\nEasy, free and no more waiting.
1063452
Check this link out.  It will tell you what you need to do and what you need to download to accomplish recovering and/or changing your password without reinstalling WinXP.\n\nhttp://www.onecomputerguy.com/windowsxp_tips.htm#forgot_password
1160416
startup in safe mode, log in as administator and hope there is no password, and teh go to control panel, users, and delet your password, boo t up normaol and make yourself a new one, tatoo it on your forehead, and put a mirror on the monitor, lol , that is what I did
86940
if you are using an account that already has administrator rights click start then run, type in "cmd"\nat the promp type in "net user administrator *"\nit will ask you for the new password.\nor\ninstead of typeing in cmd in the run window, type in "control userpasswords2" and this will bring up a useful little window for resetting account passwords\n\nif you do not have administrator rights for your account, try safe mode, if that dont work, instant message me and i can send you a program that can reset the password.\nhittin_joints@yahoo.com
174696
A new PC would not have a password on it.  May have been a display model and someone put a password on it.  About the only way to clear all that is to reload the OS which will clear everything on the hard drive.\n\nWhat are the chances your purchase was "hot" to begin with???\n\nIf your merchant is reputable, you should take it back to them and have them clear this problem.\n\nThe admin thing mentioned might work as long as there has not been an admin password set.  Without administrative right in XP, you can't get very far.
576154
if you are the administrator then you could be screwed on this and the answer is to reformat.   If you arent the administrator then you can  click on the question and get option to put in the administrator id and password or try booting from the windows xp disk.  You can sometimes get this to work if it is not the adminstrator account.  You can to www.bootdisk.com and find solutions.
728383
I'm making a massive assumption that you are referring to MS Windows system here.  Unless there is another account in the administrators group you need the old password.  If you don't I'm afraid it's back to the Windows CD.  ...or you could try l0phtcrack - google it.  You'll need to do a bit of footwork to get at the SAM which contains the password but the advice that comes with l0phtcrack will get you through this.
1087101
There are programs widly available (illegal mind you) that will crack the OS password. The battery and jumpers are only to reset the BIOS and will have no affect on the OS.\n\nUPDATE: If you don't feel comfortable cracking the administrator password, I would reset the BIOS and reinstall the OS...worst case scenario is you are out $90 for the OS,,,,unless you received it as well (to include the key).
471377
Unfortunately DELL won't be able to do much for you except maybe ship you the re-install disks.  You can try safe mode to reset the password.  You can also try logging in as administrator with no password or with admin as the password.  Sometimes it is that simple.\n\nKnowing what OS I might be able to give you a few more ideas.
35455
you can login as administrator and reset there password from the control panel
150947
You should either Repair the current installation (I am not sure it will not erase the passwords), or use the tools which can reveal dial-up passwords before the new fresh installation.\nYou can use MiniPE. It has a tool to reveal the dial-up passwords.
1023000
boot  up in safe mode, try to log in as admin and hope ther is no password, and tehn go to control panel, sers and selet your password, then reboot and make a new one.\nIf admin has a password, the it gets harder' go to this page for instructions in using the recovery console\nhttp://pubs.logicalexpressions.com/Pub0009/LPMArticle.asp?ID=305\nhttp://www.lifehacker.com/software/windows/how-to-reset-your-windows-xp-password-137980.php\nhttp://www.petri.co.il/forgot_administrator_password.htm\n\ntry these, im me if they don't work, \nand get a new boyfriend, that is not cool