[SOLVED] After upgrading Avast error c000021a

[Omonimo]

After upgrading Avast I reboot and the PC crash at logon with error
STOP: c000021a (Fatal System Error). The Windows Logon
Process System process terminated unexpectedly with a
status of 0xc00000080 (0x0000000 0x00000000). The system
has been shut down
I can't go also in safe mode (a similar error) wath can I do ?
Maybe Avast installed some driver in the last release ?

yours

Alberto

[DavidCo]

Are you using XP, if so do a search on the code
Seems to be a known problem and not dependent on your AV
 

[Omonimo]

Yes I use XP,
but I did a search, the rare people that received this error
(complete with 0xc00000080) seems to solve with a reistallation,
I think it depend from the AV because the error appeared at reboot after
upgrading the AV, and I saw that the upgrading downloaded a SYS file.
I don't do anything else in this session.

yours

Alberto

[DavidCo]

Or repair
From the look of the Microsoft KB's on the subject it isn't so rare
Have you search Technet

[Omonimo]

I tried from the CD recovery console, but the LAST KNOWN GOOD CONFIGURATION
don't work, I can try the recovery of the registry as explained in he technet,
wayh do you think ?

Alberto

[DavidCo]

What version of XP are you running, especially the SP
XP dosn't back up all of the hives, so whilst it shouldn't make things worse....

[Dwarden]

please follow these  instructions

please upload Your minidump to so Avast staff can analyze it
to
ftp.avast.com/incoming

(files are usually located in C:\Windows\Minidump
it's .dmp file from time of the BSOD

[DavidCo]

Dwarden
The OP can't get past logon

[Dwarden]

he should try boot into safe mode / safe mode with networking and uninstall Avast there then

and ofcourse upload the dumps if any present

(i dont think renaming the avast asw*.sys files to e.g. asw*.sys_disabled in Windows XP will work w/o issue)

[doktornotor]

he should try boot into safe mode / safe mode with networking and uninstall Avast there then

That won't exactly work either:

I can't go also in safe mode (a similar error) wath can I do ?

[DavidCo]

Use a live CD and copy the file to another medium
It may help, but....

[Dwarden]

or usage of last known working configuration tho that might be tricky

[Omonimo]

or usage of last known working configuration tho that might be tricky

thanks for replay but in recovery console the last working configuration don't
do anything, I already try it

another thing is the asw*.sys the only file loaded by the registry ?


yours

Alberto

[Omonimo]

up

[DavidCo]

another thing is the asw*.sys the only file loaded by the registry ?

I think I am losing it
I do not understand the quoted above
If you cannot get access to Windows - no logon, no safe mode etc how can you 'see' what is loaded by registry