EDIT: solved thanks anyway guys
After using the steam link windows auto detected that i was getting low fps on the desktop (from the pc and link both being on wifi) and turned off windows aero now i'm haivng trouble getting it back on.
I have already done some googling and windows auto troubleshooter hasn't been able to fix it. I have also tried the regedit fix to no avail.
Some pictures of what im having trouble with..
windows 7 64bit