cannot open devmgmt.msc

[carol]

Tried to look in system>hardware>device manager to check for conflicts but got the message, "MMC cannot open file D/windows/system32/devmgmt.msc". Can anyone tell me what the problem is?

[Dave_Lethal]

I believe that happens when Norton Antivirus deletes infected dll's in system 32 folder, and Windows fails to automatically restore them like it usually does so you must do it manually.

Go to http://www.dll-files.com and get these dll's (some you might not need)

msxml2.dll

msxml2r.dll

msxml3.dll

msxml3a.dll

msxml3r.dll

msxml4.dll

msxml4r.dll

dfrgres.dll

dfrgsnap.dll

dfrgui.dll

Drag these dll's in C:\Windows\System32.
Try one dll at a time until you can succesfully open device manager.

You can back up your old dll's if you wish but when you put the new ones in then delete them windows will automatically start replacing them.