I flashed it using qflash just put the bios on a usb drive, if it dosent find it try making the usb drive bootable (google is your friend) ;)
Didnt realise vista loader needed to be uninstalled, its working now thanks alot :D. I uses the Asus Bios to test not sure about the HP one.
I also have this problem on my GA-EP45-DS3R im using vista loader and it activates fine until i use s3. I tried one of the bios' on here and still...