This is my first post on this site.
My home computer is running Windows 7 - Home Premium 2009. The computer is somewhat slow and the C and D drives are almost full. In searching through the D drive I have found many files with padlocks which have strange names containing random letters and numbers (pic attached). When I open these they contain eula, dll and data files. I don't recall creating them and would like to delete them but when I try I get a message saying I need permission from the SYSTEM to make changes.
Can anyone please tell me what all these folders are and how I may be able to get rid of them? Is this a malware problem? Each one of these folders seems to take up from 7MB to 30MB of space.