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critical system error on startup - need help!

post #1 of 11
Thread Starter 
hey guys, iv got a serious problem with my rig at the moment.
yesterday i was using it as normal, shut it down, went to work and when i came home and booted it up again, i ran into a very confusing problem.

heres what happens :-
i press the power button,
its goes through p.o.s.t and the widows splash screen,
the logon box pops up and says "windows is starting up",
then just as is starts to get to the logon box an error message pops up and says, "lsass.exe system error"
"an invalid parameter or function was passed to a service or function"
so i click ok and it resets its self, and the same thing happens again.
iv tried safe mode and the last known configuration that windows knows worked, but i get the same problem, at the logon screen.

anyone have any idea on how to fix this? iv so much data spead over 2 drives and i really do not want to loose any of it. my gf`s pc does not have another SATA port or PSU connection to enable me to simply transfer data from my drive to hers , other wise i would and simply reformat.

any help would be great.
cheers, cat.
Aye5
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Aye5
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post #2 of 11
It sounds like there may be a virus at play here. lsass.exe is a windows file that authenticates you as you log into windows. There are some virus that use the name lsass.exe and cause this issue you have described. You may be able to do a repair install of windows to allow you to backup your data and then I suggest that you format the drive and do a complete reinstall.
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post #3 of 11
1.) Boot from the windows install disk
2.)When prompted choose repair
3.)When in dos screen choose windows 1
4.)Type "fixmbr"

After that, reboot and see if you can log into windows again.(might have forgotten a step or 2 but this should work in your case)
Rosso Illuminato
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Rosso Illuminato
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post #4 of 11
Thread Starter 
Quote:
Originally Posted by Pir View Post
1.) Boot from the windows install disk
2.)When prompted choose repair
3.)When in dos screen choose windows 1
4.)Type "fixmbr"

After that, reboot and see if you can log into windows again.(might have forgotten a step or 2 but this should work in your case)
ok, i tried that. inbetween setp 3 and 4 it ask`s for my administrator password. i type it in and it says its wrong!?
i think this is one messed up virus.
Aye5
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Aye5
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post #5 of 11
just leave the password blank. It shoud pass right over it.
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Rosso Illuminato
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post #6 of 11
Thread Starter 
yup, tried that. still claims the password is wrong.......
Aye5
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Aye5
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post #7 of 11
Thread Starter 
bup! any other ideas guys? im locked out of my own pc
this is not good at all. iv got college work and whole lifetimes worth of photos on my main HDD
Aye5
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Aye5
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post #8 of 11
Quote:
Originally Posted by catalyst View Post
bup! any other ideas guys? im locked out of my own pc
this is not good at all. iv got college work and whole lifetimes worth of photos on my main HDD

Did you do the repair install? That will get you working long enough to backup you data. Boot from the Windows CD and after the f8 prompt for the license agreement it will show you the Windows installations it sees and then you tell it to repair. It will go through the process of reinstalling Windows without formatting or overwriting your photos or any other data you have on the HDD. The repair install reinstalls the system files to the original state. Any program installed on the system will still be there (as well as any virus) so be sure that you back your stuff up when it completes and then do a full format and reinstall again.
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post #9 of 11
Quote:
Originally Posted by catalyst View Post
bup! any other ideas guys? im locked out of my own pc
this is not good at all. iv got college work and whole lifetimes worth of photos on my main HDD
Method 3: Reset password from another user account with administrator credentials

If you cannot log on to Windows by using a particular user account, but you can log on to another account that has administrative credentials, follow these steps on how to do the trick:

1.Log on to Windows by using an administrator account that has a password that you remember. You may need to start WinXP in safe mode.
2.Click Start, and then click Run.
3.In the Open box, type “control userpasswords2″, and then click OK.
4.Click the user account that you forgot the password for, and then click Reset Password.
5.Type a new password in both the New password and the Confirm new password boxes, and then click OK.
Method 4: LOGON.SCR password reset trick

LOGON.SCR changing administrator or domain admin password hack works on Windows NT 4.0 and some versions of Windows 2000. The simple trick uses Cmd.exe as screen saver that triggered by system when idle, allowing users to access to command prompt to change password.


http://www.mydigitallife.info/2007/0...staxp20032knt/
post #10 of 11
Quote:
Originally Posted by catalyst View Post
bup! any other ideas guys? im locked out of my own pc
this is not good at all. iv got college work and whole lifetimes worth of photos on my main HDD
if you have more than one hd, format the other one and use a newly installed os to get the files from you old os.
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