Does it have H: connected already as driveletter for cardreader, usb or such?
No nothing of the sort, just a CD and C: drive and that's it. I've also tried the changing drive letters hack that has been mentioned before and even then it won't map a drive.
Just updated BIOS, no change. Reset BIOS, only making the edit to turn on PXE boot, no change
Setting SATA to Legacy, no change.