re: Blank or Empty Device Manager in Windows XP - A Compilation of Solutions
Thursday, December 29, 2005 at 4:46 am
Windows XP Annoyances Discussion Forum
Posted by MatrixCow
(7 messages posted)
I can't export the key. "The structure does not exist. Check path."
On Thursday, December 22, 2005 at 12:38 pm, jcw wrote:
>Some thoughts, that I'll spell out now as I may be unavailable later for a while.
>You didn't answer all of my previous questions, so I will here only address what
>you just reported. I won't here try to address all of the possibilites that could
>stem from answers to all of my previous questions.
> Back-up that reg key you mentioned:
>hklm\system\CurrentControlSet\Enum\Root\LEGACY_MRACOMM
>
by exporting it to a convenient location (right-click on that key, then click
>on Export, select where to save a copy of it, and click on Save).
>Then go to the backed-up copy in the .reg file, right-click on it and click on
>Edit. The file should display in Notepad, where you can examine it for irregularities:
>either blank (no) entries, or garbled entries as described in step 9 of the original
>compilation.
>
If review of that .reg file persuades you that the reg key is corrupt and the
>likely problem, try to delete that key from within the registry editor (regedit).
>Make sure you have the permissions to do so as explained in step 9 of the compilation.
>(To be clear, I mean deleting the registry key from within regedit, not deleting
>its back-up copy in the .reg file, which you should keep until your problem is resolved.)
>If you can delete the key, reboot and see what happens. (You can restore the key
>if need be by right-clicking on its back-up .reg file and then clicking on Merge.)
> If you can't delete the key from within the registry editor (regedit), even after
>making sure you have the permissions to do so, I would try booting into safe mode
>with command prompt, and then at the command prompt in its window, use the REG
>DELETE command to delete the key. (To repeat, I mean deleting the registry
key,
>not its back-up copy in the .reg file.)
>
To boot into safe mode with command prompt, restart the computer and begin repeatedly
>pressing the F8 key. When the Windows Advanced Options Menu appears, select Safe
>Mode with Command Prompt, and press Enter. (A screen-shot of that Menu is at this
>webpage - at its top, click on "How To Access Safe Mode":
> » http://www.webtree.ca/windowsxp/repair_xp.htm )
>
To see the syntax for the "reg delete" command, type at the command prompt:
>REG DELETE /?
>
If you are unsure about using that command, perhaps you can find someone who
>can help you.
>
Note: be careful here, and double-check your command line before entering
>it at the command prompt, and again before pressing Enter. If any doubt, first back-up
>the entire HKLM\System\CurrentControlSet\Enum key (right-click on it, click on Export,
>select a convenient location where to save a copy of it, and click on Save).
>You also might consider sending a private message to "F15hii" who wrote the post
>at:
> http://www.annoyances.org/exec/forum/winxp/1133980151
>
for more information on what that poster used to delete the legacy key there
>found to be the problem. The poster's description of a "registry fix" that the
poster
>downloaded, unzipped, and ran as "regfix1 and regfix2" might be helpful to you.
>I'm not familiar with it. You also could do a Google or other search for it.
>
To send a private message to F15hii, click on that "handle" link at the top
of
>his/her posted message.
>One other thing: you mentioned having an empty network connections window.
As
>you can see from F15hii's above-referenced post, you may need to do a manual search
>for another corrupt registry key causing that problem. Start looking for something
>called in part "LEGACY_MRACOMM" or "MRACOMM" (in each case without the quote marks).
> Finally, would you please post your findings and results - good or bad - so that
>others with a blank or empty device manager might benefit from your experience.
>
>
>
>
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