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Infinite Reboot


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#1 Tarlo

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Posted 06 December 2006 - 02:35 PM

Ive got a Dell dimension 5000 running xp pro

AVG automatically deleted a so called trojan named "...\system32\winlogon.exe", now I no this is needed for logging in and whatnot but everything Ive tried (virus scans, registrey cleaners) hasnt worked and was wondering if anyone here had some specific help?

Basicaly when I turn the computer on, it has the Dell loading screen followed by the Windows loading screen but then screen turns black for a few seconds and returns to the Dell loading screen and repeats.

I tried restoring the file from AVG's virus vault but that didnt work, but I can login in safe mode hence this post.

Any help apreciated.

Edited by Tarlo, 06 December 2006 - 02:36 PM.


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#2 thyme101

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Posted 06 December 2006 - 04:37 PM

Exactly the same has happened to my son's pc tonight. Can anyone help?
What should we do ( apart from curse)?
I hope someone knows the solution

cheers
thyme
Windows XP ~ ZoneAlarm Pro ~ ViRobot Expert4 ~ Spybot S&D ~ AdAware SE
Celeron 2.5GHz ~ 1.5GB RAM ~ 40GB + 120GB IDE HDD ~ no fancy graphics card, sob ~ NewNet BB

#3 TheTerrorist_75

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Posted 06 December 2006 - 05:21 PM

Read this: Preparation Guide For Use Before Posting A Hijackthis Log, Instructions for receiving help in cleaning your computer

Then post a Hijack This log here: HijackThis Logs and Analysis
I am a transplant survivor.

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#4 Bear

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Posted 06 December 2006 - 05:21 PM

Try running sfc /scannow from Start, Run. This will replace any corrupted, damaged or missing system files. You may be prompted to insert your Windows XP cd during this process. You may need to visit Windows updates after running this tool.

Using Windows XP sfc /scannow
Posted Image


My System Specs


Comptia A+, Network + & MCP certified.

#5 thyme101

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Posted 06 December 2006 - 05:33 PM

Hi
I am using my pc to type this.

Son cannot get his to load windows at all - pressing F8 during sart-up doesn't load safe mode it just makes some noises and then when it gets to the bit where normally the input goes to the monitor and you get the your desktop loading, instead of this the screen goes black and it it 'reboots' even though it hasn;t correctly booted up in the first place.

So he can't run the hijacklog thing or start/scan - his pc will not start-up just seems on a continuous loop of trying to boot up then failing over & over again.

His pc runs Windows XP pro, AVG free anti-virus , free zone alarm.

We use a Netgear DG834GT modem/router but wired rather than wireless.

Soz for slightly garbled explanation but it has been a long day and I've not yet had a cup of tea since getting in from work!

cheers
thyme
Windows XP ~ ZoneAlarm Pro ~ ViRobot Expert4 ~ Spybot S&D ~ AdAware SE
Celeron 2.5GHz ~ 1.5GB RAM ~ 40GB + 120GB IDE HDD ~ no fancy graphics card, sob ~ NewNet BB

#6 TheTerrorist_75

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Posted 06 December 2006 - 05:49 PM

Do you have a restore CD or partition?
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#7 thyme101

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Posted 06 December 2006 - 05:54 PM

Not for his machine
Windows XP ~ ZoneAlarm Pro ~ ViRobot Expert4 ~ Spybot S&D ~ AdAware SE
Celeron 2.5GHz ~ 1.5GB RAM ~ 40GB + 120GB IDE HDD ~ no fancy graphics card, sob ~ NewNet BB

#8 TheTerrorist_75

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Posted 06 December 2006 - 06:12 PM

Not for his machine


Was the restore partition removed and then XP Pro installed?
I am a transplant survivor.

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#9 thyme101

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Posted 06 December 2006 - 06:22 PM

'Was the restore partition removed and then XP Pro installed?'

Afraid I have no idea!
I have not paid a great deal of attention to his system. As far as I remember, he bought a new barebones system and then loaded Windows xp pro - he was away at Uni when he got it.
He's gone to bed now as he has to get up early for work so I cannot ask him any more about that at the moment.

Apologies if that is too much of the wrong information!

thyme
Windows XP ~ ZoneAlarm Pro ~ ViRobot Expert4 ~ Spybot S&D ~ AdAware SE
Celeron 2.5GHz ~ 1.5GB RAM ~ 40GB + 120GB IDE HDD ~ no fancy graphics card, sob ~ NewNet BB

#10 TheTerrorist_75

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Posted 06 December 2006 - 06:29 PM

Find out from him tomorrow. I'll be on most of the day seeing as it looks like I'm getting snowed out from work again.
I am a transplant survivor.

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#11 thyme101

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Posted 06 December 2006 - 06:43 PM

Ok, I'll grill him when I see him!

Snow oooo, :thumbsup: We're just getting rain rain rain wind rain and then a bit of wind and rain.

cheers
thyme
Windows XP ~ ZoneAlarm Pro ~ ViRobot Expert4 ~ Spybot S&D ~ AdAware SE
Celeron 2.5GHz ~ 1.5GB RAM ~ 40GB + 120GB IDE HDD ~ no fancy graphics card, sob ~ NewNet BB

#12 Lazarus Long

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Posted 06 December 2006 - 07:23 PM

Thyme-

Since the system won't boot to safe mode, it makes it difficult- not impossible - to fix. If the system has a restore partition, that's the fastest and most destructive way to go as far as the data is concerned; it will re-install the factory load and overwrite everything else- emails, pix, music, viruses...

The method I prefer is to boot to the XP Pro CD, chose "reinstall Windows" but select the Recovery option. Once you get to the c:\ prompt, type in: chkdsk /r and press 'Enter'. Make sure there is a space between the chkdsk and the /r.

This will scan and repair/re-write the files on the hard drive XP needs to boot WITHOUT DESTROYING THE DATA, the downside is that it can take a few hours. If this doesn't work, there are a few other commands you can try- c:\ fixboot, c:\fixmbr and c:\bootcfg. I have had much less success with these than the checkdisk command.

If that fails, you need to run diagnostics on the drive.

If it could boot to safe mode, creating another user account would be the first step I would try.

Good luck

~Lazarus

#13 TheTerrorist_75

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Posted 07 December 2006 - 10:30 AM

This may interest you. Probably the cause of your problem in the first place.

I Thought I Should Pass This On!, A problem with AVG
I am a transplant survivor.

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#14 Tarlo

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Posted 07 December 2006 - 12:02 PM

hey everyone thanks for all the replies, Im going to try the chkdsk option now as Ive just found my XP CD, is this deffinently non-destructive? Ive got a hell of a lot of work that I *realy* cant afford to lose.


I tried the /scannow but it briefly flashes a command box up then closes, so no help there.

Edited by Tarlo, 07 December 2006 - 12:04 PM.


#15 TheTerrorist_75

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Posted 07 December 2006 - 12:37 PM

sfc /scannow

Scannow sfc

Run chkdsk /r from Recovey Console.

Description of the Windows XP Recovery Console

If necessary do a repair install. It shouldn't erase any saved data.

How to Perform a Windows XP Repair Install
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