I am at a lose please help *read whole question first please*

[ladymav]

I am running windows xp pro *no idea which SP* About a week ago, I noticed my computer was running super slow, so I ran CCcleaner on it saved the changes to the registry *just encase something went wrong* and went to restart my computer. Windows demands to do an update  I restart the computer to see if that helped fix my lag issue. Now I am locked out of my computer it keeps asking for an admin password which I don't have one. I have always just clicked enter when the empty log in box poped up. Now it is saying that my password and user name are incorrect. I have tried everything I can think of to do *a side from backing up my hard drive and re-installing the OS* I have tried the hidden backdoor admin account in safe mood *it's gone*, I have tried common factory passwords such as admin, Admin, 1234, and so on, I have even used an xp password reset software. It scans my computer and it says I have no password set      So now I am locked out of my computer by a password that does not exist. I have even tried to do the recovery console on a CD and it to says my password is incorrect. I have tried Last known good config, Also I have no option to do a rollback it seems either. What else can I try to do? A side from backing up and re-installing? Please help I have been needing to access and use the programs *some of which I will not be able to ever use again if I have to re-install* and files on my computer for days now.

Note I am not asking for the password I am asking for what I can do to access my computer again

[SuperDave]

I think that the only thing you can do is to re-install the OS. It's quite possible that the computer is infected. Please follow the directions below and run the scan. You can also use this to access the computer and recover your important files and documents. Don't try to save any programs. Those will have to be re-installed afterwards.

We are going to be using a Windows Recovery Environment to help disinfect the system so it may boot again.

Download the OTLPE Standard REATOGO Windows Recovery Environment.

• Place a blank CD-R disc in to your CD burning drive.
• Download OTLPEStd.exe and double-click on it to burn to a CD using an ISO Burner. One can be found here.
  
• Reboot your system using the boot CD you just created.
• Note : If you do not know how to set your computer to boot from CD follow the steps here
  
• Your system should now display a REATOGO-X-PE desktop.
• Double-click on the OTLPE icon.
  
• When asked "Do you wish to load the remote registry", select Yes
  
• When asked "Do you wish to load remote user profile(s) for scanning", select Yes
  
• Ensure the box "Automatically Load All Remaining Users" is checked and press OK
  
• OTL should now start. Change the following settings
  
• Change Drivers to Non-Microsoft
  
• Press Run Scan to start the scan.
  
• When finished, the file will be saved  in drive C:\_OTL\MovedFiles
  
• Copy this file to your USB drive if you do not have internet connection on this system
• Please post the contents of the OTL.txt file in your reply.