title: failed to open a session for the virtual machine
body: <p>i have this problem when opening a virtual machine in virtual box:</p>
  <pre><code>    Not in a hypervisor partition (HVP=0) (VERR_NEM_NOT_AVAILABLE).
  VT-x is disabled in the BIOS for all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED).
  
  
  Result Code: 
  E_FAIL (0x80004005)
  Component: 
  ConsoleWrap
  Interface: 
  IConsole {872da645-4a9b-1727-bee2-5585105b9eed}
  </code></pre>
  <p>i searched for a solution and i found that i must enable the virtualization from the the BIOS setup but when i checked it i found it enabled. can anyone provide me a solution?</p>