Hello! I am using Win7 Ultimate x64. Suddenly, it became impossible to safely remove external disc. At first it froze the computer. It became a "blue screen" and memory dumping before restarting. I chose to start Windows normally and then made a thorough check of my C drive, made on a deep scan using NIS (Norton Internet Security 2012) and Malwarebytes Anti-Malware and verified the file DeviceDisplayObjectProvider.exe. I found nothing unusual or suspicious. In a further attempt to do a safely remove of external disc, DeviceDisplayObjectProvider.exe starts in task manager, but the process was terminated after 10-15 skunder and everything else seems to function normally. Via Gooogles I basically have not found any reasonable assistance or explanation, except the Council to re-register devicedisplayobjectprovider.exe using regsvr32. When I tried to do this, I stumbled upon another problem. I got the following: starting address of DllRegisterServer was not found. I may add an additional problem: Windows Security Center service is disabled and can not be started. In "cmd prompt" I have as an administrator run sfc / scannow without finding any errors. I have also run UnHackMe and Microsoft Malicious Removal Tool - 64 bit without finding something fishy. I think it seems to be a problem created by a trojan / virus or similar, but I have not found anything. I am grateful for all the tips and advice! Finally! I beg your pardon, but I am not used to write in english! But I hope that the whole thing is reasonably understandable.