Stop C000021a Fatal System Error

April 8, 2009

Hello,

Two days ago I logged onto my computer and received a security alert

asking me to update my computer, I can't remember what it exactely

said, but it appeared to be a Microsoft security update. I believe

this was a virus. After I updated this, the computer restarted but

there were no icons, no task bar, the screen was just the desktop

picture. So I managed to use the Task Manager to bring up an Exployer

page and downloaded Super Anti Spyware and ran a scan. Right when the

virus was found, there were several trojans that were found, one of

which is SVCHOST.exe, the computer would just restart. It did this

every single time. I managed to download a antimalware scan

application and that found the same viruses and removed everything. I

thought everything was ok at this point. Then I was trying to do some

clean up on the desktop and remove an old Norton Antivirus software

from the Add/Remove option in the control panel. This caused the

computer to terminate, and all I received was the blue screen saying

"Stop C000021a Fatal System Error The windows logon process system

process terminated unexpectedly with a status of OxC00000005 The

system has been shut down" I restarted the system and pressed F8 to

start up windows at the last good configuration. But after I select

this, it askes what my administrative password is. I don't have one,

and when I hit return, that is wrong. How can I get by this? I am

not with the computer right now, so I mentioned everything I

remember. I do not have the Windows cd either, so I can't try to

reinstall the OS. Is there a solution without that cd?

Thanks

Erin

April 8, 2009

erin3184@gmail.com wrote:

> Two days ago I logged onto my computer and received a security alert

> asking me to update my computer, I can't remember what it exactely

> said, but it appeared to be a Microsoft security update. I believe

> this was a virus. After I updated this, the computer restarted but

> there were no icons, no task bar, the screen was just the desktop

> picture. So I managed to use the Task Manager to bring up an Exployer

> page and downloaded Super Anti Spyware and ran a scan. Right when the

> virus was found, there were several trojans that were found, one of

> which is SVCHOST.exe, the computer would just restart. It did this

> every single time. I managed to download a antimalware scan

> application and that found the same viruses and removed everything. I

> thought everything was ok at this point. Then I was trying to do some

> clean up on the desktop and remove an old Norton Antivirus software

> from the Add/Remove option in the control panel. This caused the

> computer to terminate, and all I received was the blue screen saying

> "Stop C000021a Fatal System Error The windows logon process system

> process terminated unexpectedly with a status of OxC00000005 The

> system has been shut down" I restarted the system and pressed F8 to

> start up windows at the last good configuration. But after I select

> this, it askes what my administrative password is. I don't have one,

> and when I hit return, that is wrong. How can I get by this? I am

> not with the computer right now, so I mentioned everything I

> remember. I do not have the Windows cd either, so I can't try to

> reinstall the OS. Is there a solution without that cd?</span>

I'm sorry but there is no solution without installation media because it

really sounds like a clean install is required. If this is an OEM machine

(HP, Dell, etc.) and the recovery partition is damaged or you forgot to

create recovery disks, call the OEM and purchase a set. These recovery disk

sets are usually very inexpensive, around $20.

If this is a generic-built machine, you will have the COA sticker on the

side, back, or bottom (if a laptop) of the computer. XP can then be

installed using a generic OEM install disk and that COA Product Key. If you

had a retail copy of XP and have lost it:

How to Replace Lost, Broken, or Missing Microsoft Software or Hardware -

http://support.microsoft.com/default.aspx?...KB;en-us;326246

Of course, a qualified computer tech who can see the computer may be able to

get around the login issues but it really does sound to me like the OS is

fatally corrupted. In every case where I've had a client's machine with

your error a clean install has been required. If you decide to try a

computer tech, I don't recommend using one from a

BigComputerStore/GeekSquad type of place.

Malke

--

MS-MVP

Elephant Boy Computers - Don't Panic!

http://www.elephantboycomputers.com/#FAQ

April 9, 2009

0xC000021A: STATUS_SYSTEM_PROCESS_TERMINATED

This occurs when Windows switches into kernel mode and a user-mode subsystem, such

as Winlogon or the Client Server Runtime Subsystem (CSRSS), is compromised. Security

can no longer be guaranteed. Because Win XP can't run without Winlogon or CSRSS,

this is one of the few situations where the failure of a user-mode service can cause

the system to stop responding. This Stop message also can occur as a result of

malware infestation or when the computer is restarted after a system administrator

has modified permissions so that the SYSTEM account no longer has adequate

permissions to access system files and folders

Unless you have GoBack installed and you are using XP then see the following. If not

then follow the advice given to you by Malke

http://support.microsoft.com/?kbid=316503&sd=RMVP

--

Peter

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<erin3184@gmail.com> wrote in message

news:eba6f5f0-2bb4-4318-88ef-c058a350032e@r36g2000vbr.googlegroups.com...<span style="color:blue">

> Hello,

>