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No devices in device manager


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#1
Mariner

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Hi everyone, I seem to have the problem that many others have had in the past.

The PC I am working on has had significant virus infestation but this has now been fully eradicated by the use of various tools around the internet. Now, having established a fully working, virus-free system I have the problem that there are no devices in Device Manager and the Plug Play service isn't started and can't be started. The message is "The Plug and Play service on Local Computer started and then stopped". This problem has occurred during the disinfect process because I have proved that the service was operating a couple of days ago. I did this by temporarily restoring a copy of the registry files and all was fine.

Since the registry copy a couple of days ago, various anti-virus, malware scans have been run and one of these may have done something to the registry which prevents Plug Play starting. Thinking that some system files were corrupted at some point by the virus infestation, I have upgraded to XP SP3 hoping that the offender would be updated but this makes no difference, which it probably wouldn't if the resgistry was the problem.

I have tried every fix attempt recommended on this topic including checking for '$%&'()' corruptions in the registry, checking Plug Play startup and path, SFC /scannow, AproposFix.exe all to no avail.

Would really appreciate some further ideas. As I said earlier, I'm convinced the registry is somehow at fault, but what should I try?

Regards

John
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#2
rshaffer61

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It appears you may still have a malware problem.
Please go to the "Malware Forum" link in my signature below and follow the instructions at the top
Especially the "You Must Read This Before Posting A HijackThis Log".

That will give you several steps that will help you clean up 70 percent of all problems by yourself.
If at the end of the process you are still having difficulty start a topic and post the requested logs in THAT Forum.
Once the malware technicians have cleared out any infection and given you a clean bill of health, and if the problem continues then feel free to post back here and we can investigate the problem even more.

Add a link to this topic so that malware tech can see what steps have been taken here
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#3
Mariner

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It appears you may still have a malware problem.
Please go to the "Malware Forum" link in my signature below and follow the instructions at the top
Especially the "You Must Read This Before Posting A HijackThis Log".

That will give you several steps that will help you clean up 70 percent of all problems by yourself.
If at the end of the process you are still having difficulty start a topic and post the requested logs in THAT Forum.
Once the malware technicians have cleared out any infection and given you a clean bill of health, and if the problem continues then feel free to post back here and we can investigate the problem even more.

Add a link to this topic so that malware tech can see what steps have been taken here



Thanks for this, the action you describe is now in progress.

For further info, I have noticed an event log entry indicating an attempt to start the 'PlugPlay' service which fails because 'An instance of the service is already running' but I as I said in my post, 'PlugPlay' isn't running and that's why Device Manager shows no entries. Does this lead you to draw any other conclusion?

Regards
John

Edited by Mariner, 02 May 2009 - 05:31 AM.

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#4
Mariner

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Hi, all the Malware problems have been removed and I'm back with you..!

The problem I started with is still there but I have managed to narrow the problem down.

The problem appeared as no devices in device manager. The cause of this is that the PlugPlay service is not started.

From command line, I get the following :-

NET START "PlugPlay"
"The requested service has already been started"

NET STOP "PlugPlay"
"The Plug and Play service is not started"

After sorting out the virus/malware stuff there were a number of Services which had "c:\windows\temp\vrt33.tmp" as the image pathname. One of these is the EventLog service. Once I fixed all these services ,my problems began, so I disabled all these services and enabled them in batches of 2 or 3, rebooting each time and checking PlugPlay.

I have now discovered that when the EventLog service starts the PlugPlay service won't. If I disable the EventLog service, reboot, PlugPlay starts ok. If I then try to start EventLog, the result is the same as for PlugPlay above.


So that's where I am, I either have PlugPlay or EventLog but not both.

Any ideas?
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#5
happyrock

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go into your bios and make sure plug and play is enabled...
nojoy...
then a repair is in order...go here for the how to guide...
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