I recently purchased this board X7DWN+ and enabled Virtualization support in the bios. I'm using two XEON CPU L5410 which also support virtualization. I tried installing both VMWare Hypervisor and Xen Center and both gave me the error that vt-x or virtualization is not supported.

Furthermore, I used the same exact CPU in X7DCT-LF and got no error and virtualization worked great. According to the bios and official documentation for this board and chipset do support virtualization. Can you please help me?