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Boot up error

By leithel1 ·
After using my P.C. one eveing I logged out. The next time I tried to use the P.C.and every time since I get the following message. The P.C. in use was not the one I'm using at this time. Please help.

The error message is:

(In the title bar) lsass.exe - Bad Image

(A big red x) The application or DLL C:\WINDOWS\system32\cryptdll.dll is not a valid Windows image.
Please check this against your installation diskette.

OK

When I click OK nothing happens. My computer won't shut down. When I push the restart button on the tower it will try to restart. It goes to the Bios screen, then the screen that says IWill, and the Windows XP Home Edition screen comes up, but when it should go to the welcome screen that's when the error comes up. I tried to go to the your site Q&A, but I don't know what the heck I'm looking for. I thought it may be a virus????? I tried to look up info. on Norton with no luck.

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by w2ktechman In reply to Boot up error

First I would run checkdisk and see if you are getting bad sectors on your HDD. If it was OK, I would run AV and Spybot/Ad-Aware
If those didnt help I would reload service packs/windows updates
Finally, system restore

If none of those work, rebuild

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by mikex In reply to Boot up error

As you describe it - it apear that you have corrupted security files needed for Login proces
here is the explain:

lsass - lsass.exe - Process Information

Process File: lsass or lsass.exe
Process Name: Local Security Authority Service
Description: Windows Local Security Authority Server Process handles Windows security mechanisms. It verifies the validity of user logons to your computer or server. Technically, the software generates the process that is responsible for authenticating users for the Winlogon service.
Company: Microsoft Corp.
System Process: Yes
Security Risk ( Virus/Trojan/Worm/Adware/Spyware ): No
Common Errors: N/A

1. get your winxp boot cd - change bios boot sequence to CD/HDD.. and boot from the CD

2. Try to restore the system by SYSTEM restore (if you didn't turn off this function)

3. try to copy the missing files from another PC with the same OS

4. Try to recover the system if you did the recovery disk

5. if nothing work - call for a specialist to save your data and reinstall the system.

Good luck

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