based on this specification about intel i7 2670QM CPU, this CPU is supported VT-x technology but i can't find option for enabling it in bios menu.
recently i update that bios firmware to 414 (official version from asus website : this )
- **OS:** Windows 7 Professional
- **System:** Asus N43SN
- **CPU:** Intel core i7 - 2670QM

[2]: N43SN | Notebooks | ASUS Global