Boot Camp not supported on this Mac MSG
I just installed Windows 7 Home Premium via Boot Camp on my Mac on Friday. On Saturday everything seemed to work as it should. But on Sunday when I tried to open the Boot Camp assistent on my Mac mini (Mid 2011) OS X Yosemite I get an error message (in Dutch) that reads: 'Boot Camp assistent can not be used. Boot camp is not supported on this Mac'
I tried to repair the bootcamp drivers in windows (which still seems to work when I restart holding down Option) but to no avail. Windows still seems to work but without the boot camp assistent no longer supported I can not delete it if I need to repartition or delete it.
Thank you in advance for your help
Mac mini, OS X Yosemite (10.10.3), Windows 7 Home Premium 64 bit