windows XP will boot to log on screen but won't log on to a user

Thank you for your reply
I am running XP home service pack 3 on

Sony PCV-RZ30CGP

Intel 865 Chipset

Nvidia Geforce FX 5200

AMI 6000326 Bios 6-26-03

2gigs PC 2700 DDR ram

3 g hz  processor

There were no new programs or hardware installed recently.
There was an error message on the blue screen but no file was mentioned. just an error number something lik  x000000007c or something like that. I wish i had written it down but I didn't. Now when I boot, it doesn't go to blue screen; that was the only time it did.  It starts windows normally until the log on screen where if you select a user, it starts to log in, then takes you back to the log on screen.  Is there a way for me to see what the error from the blue screen was through DOS?
The link you sent me i couldn't use because when I boot to safe mode when it gets to the user log on screen and I select a user it starts to log on to the user  then kicks me out and saves my settings and returns me to the log on screen.
is there any way to access the Windows system recovery in DOS?
Also, because you mentioned possible issues with the AV, I'm using AVG Free version. 
Answer
Answer
This sounds like you might be in the logon/logoff loop caused by malware.
See if this article helps:

"Windows XP Logon-Logoff Loop"
  < http://www.thecomputerguy.co/node/14 >

HTH,
   JW

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I'm not sure what "No this didn't help" means.  Does it mean that you tried the setps in the article and it didn't work; or that you were not able to try the steps in the article because you couldn't get into a Recovery Console or a DOS prompt?

 

You might be able to recover by restoring your registry to a point in time before this problem occurred.  Since you can't boot your computer, try creating a free "Hirens Boot CD" on another computer and boot your system from that.

 

Hirens Download: < http://www.hirensbootcd.org/download/ >

(don't be fooled... the correct link to download is a '.zip' file in a light green rectangle with disk icon at the bottom).  The .iso file must be burned in a special way in order to make the CD bootable.  Instructions for burning the CD are here:

Hirens Burning: < http://www.hirensbootcd.org/burning/ >

 

Once you burn the Hirens CD, boot your system from it.  At the first black/white screen, select "Mini Windows XP" and let it continue to boot.  Once booted, go to the Hirens CD Menu and select:

  Registry Tools -> Registry Restore Wizard.

Pick a date/time before your problem.  Restore the registry, reboot your machine, and see if that helps.

 

If not, you can bring up a command prompt (DOS) window and follow the instructions in the prior article.

 

HTH,

  JW

 

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Last updated December 24, 2017 Views 480 Applies to: