Držím palce.

EDIT2: SUCCESS!!! I had to remove my dedicated GPU (Nvidea GTX 460M) since I had fiddled with the bios setup of that unit. After that I could boot of the PAR00MEC.fd which I had renamed to PAR00X64.fd. (Something seems to be wrong with my GPU atm though so I'm trying to reflash with it in and then reinstall Win7, but at least my computer boots again. Thank you!