Windows Virtual PC- Cannot start Windows Virtual PC Host Process

Hello! I am an I.T which want to use a virtual machine to my windows 7 operating system I searched the internet if I have VT support to my computer and this error appeared.
Do I have VT support to my system?
Because the error said access denied. Maybe I just need to configure it right?
Please help give me suggestions for this.
Thanks.

Windows Virtual PC
Cannot start Windows Virtual PC Host Process. Check the System event log for more details
Access is denied
OK
