Hello everybody,
It all started with Windows Media Player (The file wmploc.dll has a version of 12.0.7601.19148 where 12.0.7601.18840 was expected), then Windows Update did not work anymore, then the PC refused to shut down (it shows a shut down message but won't stop even after 24 h), now I can't uninstall softwares, sometimes sound driver does not function but I can't access device manager (message saying it did not reply in a timely manner or something like that).
I tried a lot of potential solutions but with no success (virus removal tools, registry cleaners, etc).
I hope my ordeal will stop here!