Windows 10 saying virtualization is impossible but cpu supports it

Cpu: intel core 2 quad Q8400
Motherboard: Asus p5ql Pro(s775)

So basically virtualization technology is enabled in bios, but in task manager it says the following:
“Virtualization: impossible”
The cpu actually supports virtualization(vt-x)

This prevents me from actually booting any 64x OS

Is there anything i can do?