I have a Intel® Core™2 Quad Processor Q9550 installed and it is supposed to feature SSE4 and virtualisation instructions ( cpu flags vmx and sse4_1 ), but CPU-Z reports it does not:

The mainboard is a Gigabyte EP35-DS4.

I've tried both Windows, Linux 32-bit and 64-bit kernels and the flags are missing in all accounts.
On the other hand, another Q9550 works fine, although on another mainboard model - still Gigabyte.
What am I doing wrong here?
