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XP Startup errors


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#1 shuitson

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Posted 31 May 2011 - 01:42 PM

Hi. I'm having a problem with my laptop! At the account login screen, I recieve two error messages. The first is an avgrsx.exe corrupt file warning, reading "\windows\system32\dpcdll.dll is unreadable". Then immediately after is another box, with an error code 0x800700c1, "A problem is preventing windows from accurately checking the license for this computer". I can only start in safe mode with command prompt.

Any help would be much appreciated

Scott.

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#2 Broni

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Posted 31 May 2011 - 01:59 PM

See here: http://support.microsoft.com/kb/914232

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#3 shuitson

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Posted 31 May 2011 - 02:12 PM

Hi Broni, thanks for your quick reply. I read the article but none of the error codes match mine.

Scott

#4 Broni

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Posted 31 May 2011 - 02:15 PM

Yes, but the message is very same.
Scroll down to "Workaround for an error code that is not in this list" section.

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#5 shuitson

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Posted 31 May 2011 - 02:21 PM

Ok, maybe I should read more carefully! Thanks again for the quick reply.

#6 Broni

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Posted 31 May 2011 - 02:26 PM

LOL....Let me know :)

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#7 shuitson

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Posted 31 May 2011 - 02:31 PM

Hi Broni. I tried to restart from "Last Known Good Configuration", but this had no effect, with the same messages coming up. Is the other suggestion of "Perform an in-place upgrade" suggesting a re-install of XP?

Thanks, Scott.

#8 Broni

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Posted 31 May 2011 - 02:35 PM

Did you try to "Rename the Wpa.dbl file and the Wpa.bak file"?

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#9 shuitson

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Posted 31 May 2011 - 03:01 PM

Hi Broni, I'm unsure how to "Rename the Wpa.dbl file and the Wpa.bak file". I've browsed a few how to's, but nothing explains how to do this from the command prompt. My safe mode is a black screen with no icons or start option.

Thanks, Scott.

#10 Broni

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Posted 31 May 2011 - 03:10 PM

Open Windows Explorer.
Navigate to:
C:\Windows\System32
Find wpa.bak file. Right click on it, click "Rename". Rename it to wpa_bak.old.
Find wpa.dbl. Rename it to wpa.old.

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#11 shuitson

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Posted 01 June 2011 - 12:49 PM

Hi Broni. I started explorer and renamed the wpa.dbl file (strange though as it seems to have kept the original, creating a new one with.old). I can't find the .bak though. I've done a search in all of c drive, with hidden files and folders aswell.

Many thanks, Scott

#12 Broni

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Posted 01 June 2011 - 08:05 PM

I can't find the .bak though

It doesn't have to exist.
You did fine.

How is the initial issue?

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#13 shuitson

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Posted 02 June 2011 - 01:08 PM

Hi Broni, thanks for the reply.

I copied the wpa.dbl before deleting in system32 folder, and repalced the dpcdll.dll file from a good machine, which removed this error box on startup, but it still will only load explorer in safe made via the command prompt

Thanks, Scott.

#14 Broni

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Posted 02 June 2011 - 07:06 PM

Go Start>Run ("Start Search" in Vista/7), type in:
sfc /scannow
Click OK (hold CTRL, and SHIFT, hit Enter in Vista/7).
Have Windows CD/DVD handy (with Vista/7, most likely, you won't need it).
If System File Checker (sfc) will find any errors, it may ask you for the CD/DVD (rarely in Vista/7 case).

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#15 shuitson

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Posted 03 June 2011 - 02:07 PM

Hi Broni, thanks for the reply. I tried what you suggested, but nothing appears to happen. No new programs running in task manager and is it correct that there is a space after sfc?

Also, I have lost the xp disc. If I purchase a new one, will it cause a conflict with the present version?

Thanks, Scott




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