Fixing Up : Can't Start Window Phone Emulator in Visual Studio 8 Due to Hyper-V

First Install your Graphic Card Drivers, as it is strongly needed, then restart computer.

Second Add The USER to control HYPER-V
After successfully completing the following steps, you will be able to control the HYPER-V from non-adminstrators account too.

1. Open the Run dialog (launch it from the Start menu or press Windows Key + R).
2. Start mmc.exe
3. Open the File menu and select Add/Remove Snap-in...
4. From the Available snap-ins list select Authorization Manager.
5. Click Add > and then click OK.
6. Click on the new Authorization Manager node in the left panel.
7. Open the Action menu and select Open Authorization Store...
8. Choose XML file for the Select the authorization store type: option and then use the Browse... to open \programdata\Microsoft\Windows\Hyper-V\InitialStore.xml on the system partition (programdata is a hidden directory so you will need to type it in first).
9. Click OK.
10. Expand InitialStore.xml then Microsoft Hyper-V services then Role Assignments and finally select Administrator.
11. Open the Action menu and select Assign Users and Groups then From Windows and Active Directory...
12. Enter the name of the user that you want to be able to control Hyper-V and click OK.
13. Close the MMC window (you can save or discard your changes to Console 1 - this does not affect the authorization manager changes that you just made).