I've got a problem with my Windows 7: Plug and Play service is not starting during system boot, despite it's set to start automatically in the services settings. It's a real pain, as my startup now takes almost 3 minutes, it fails to start the services that depend on PnP, and it fails to authenticate my Windows (as the authentication requires Plug and Play working), alerting me that my OS is not genuine, so I have to manually start Plug and Play and then manually run Windows Authentication to confirm it's ok...
I've got Windows 7 Pro 64-bit with SP1. The problem happened "suddenly" - I haven't changed any hardware recently, last software installing/deinstalling were done a few days ago, last Windows Update 3 days ago, and this very morning everything was still ok.
Checked the services list - Plug and Play is set to automatic start. Deleted the umpnpmgr.dll and copied one from another computer (the same system) that works fine - didn't work. Tried to unregister and re-register umpnpmgr.dll, but it was not possible (got error from regsvr32 that the module was loaded, but entry point "DllUnregisterServer" was not found), so I presumed that it's not registerable. Tried to boot in diagnostics mode (changing in msconfig) - Plug and Play didn't start as well, so no changes apart from everything working veeery slooowly. Scanned with sfc /scannow - it hasn't found any corrupt files.
I've already had exactly the same problem about 3 months ago, but I couldn't really try to solve it then, had to reinstall Windows asap and continue working. Now I can spend some time on it, and I would love to repair it rather than another OS reinstall... (Especially that problem can reappear in another few months.)
Please, please, please help me - I've run out of ideas how to solve it...
Your humble and desperate,
I've run MiniToolBox (last 10 events; installed programs; users, partitions & memory size) - I've attached the results in .txt file. I've run Speccy as well, snapshot is here:
Edited by ghardinus, 04 March 2015 - 11:44 AM.