Originally Posted by t3hl33td4rg0n
have you tried adding environment variable?
then check device manager again under IDE ATA/ATAPI controller, hard disk controller and Storage controllers for greyed out items. I bet you will likely find the culprit that way. Be sure to enable hidden devices when you do this.
Yup, though to clarify - you type this in cmd prompt before launching device manger from said prompt.
Also, you may want to just check Non plug and play drivers as well.