"The System Could Not Find The Environment Option That Was Entered"

The problem started while playing a game, causing a BSOD. After a restart, I noticed some of my programs just didn't boot up, for example Core Temp. I attempted to manually start Core Temp and received the following error: "The system could not find the environment option that was entered."That problem lead me here: The system could not find the environment option that was entered. - Microsoft Answers Which, obviously, did nothing for me. I tried to create a new user, but when I click the link in the control panel to do so, nothing happens. I then tried to repair my windows installation using my disc, and it said it could not find any problems. After searching some more, I found another solution would be to perform an upgrade to my Windows installation to fix the problems.

I put the disc in, nothing happened so I went to the setup.exe directly and got the same error as above. So I then booted in safe mode, and it loaded. I got excited until it said something like "an error prevented a compliance check from completing"And just to be very clear, my windows 7 is valid, I'd be more than happy to share an image of my newegg receipt or even my box to get that out of the way, as I've seen a lot of flaming towards people who have issues regarding validity. Well that brought me to a thread on this website where someone said to open an elevated command prompt and run sfc /scannow. I tried doing that and got this error: "This file does not have a program associated with it for performing this action. Please install a program, or, if one is already installed create an association in the default programs control panel."