How to change the Windows 2008 Core desktop resolution

In Windows 2008 Core, you can't directly modify the desktop resolution with the graphical interface. You need to modify the registry directly.
Desktop resolution key value is in the following location:
HKLM\\System\\CurrentControlSet\\Control\\video
There may be multiple folders named using GUID in this directory, you need to know the current use of your system. The GUID of the graphics card.

if you do not know the GUID (nonsense, of course, do not know!),
by this command can know your current graphics drivers used by the system:
sc query type = driver group = video

Note: There is no space between type and =, there is a space between = and driver; similarly, there is no space between group and =, there is a space between = and video, can not There is an error, otherwise the command fails to run!
Remember the resulting graphics card name, then look at the Device Description description in the 0000 subdirectory of the above registry directory, find the NIC you are using now, and then modify the two key values ​​DefaultSettings.XResolution and DefaultSettings.YResolution.
Note: This is the hexadecimal data, the 1024 × 768 and 400 should be filled respectively 300,800 × 600 320 and 258, respectively, should be filled after the expiry

command:
shutdown -r - t 0 restart the system.