How to Make the Registry Change

You may have heard warnings about the risks of altering the registry, and these are valid—you don’t want to play around in the registry without knowing what you’re doing. However, this registry change is not complex.

First, try changing the screen resolution in Windows through the Control Panel to see if higher resolutions are available. If not, make these registry changes to make a higher resolution option available.

To change the registry:

Open the registry editor with the regedit command, either from the Run dialog box, Start menu, or Command Prompt. Scroll to the top of the left pane to go to the top of the registry tree. Go to Edit and select Find. In the search field, enter Display1_DownScalingSupported and select Find Next. The search may take a while to complete. If this registry key is missing, see the next section below for instructions on how to add it. In the right pane, select Display1_DownScalingSupported. Go to Edit and select Modify (or double-click the key name) and in the Value data field change the 0 to a 1. Change the value for every instance of the key found in the search; otherwise, the hack may not work. When you’re done, restart the computer.

When your PC restarts, and you go to change the resolution, you’ll see options for 1024x768 and 1152x864 resolutions for your device, in addition to any previous resolutions.

If the Registry Key Is Missing

If you didn’t find this registry key, add it yourself. To add a registry key, make a new Display1_DownScalingSupported DWORD value in each registry key location.

For the first key, go to: HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Control > Class > {4D36E968-E325-11CE-BFC1-08002BE10318} > 0000 On a Lenovo S10-3T, the key is found in one of these two places: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Video(154229D9-2695-4849-A329-88A1A7C4860A\0000 OR HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video(154229D9-2695-4849-A329-88A1A7C4860A)\0000 Go to Edit and select New > DWORD (32-bit) Value. In the right pane, change the name of New Value #1 to Display1_DownScalingSupported and press Enter. Select Display1_DownScalingSupported, and press Enter. In the window that opens, set Value data to 1. Repeat the previous steps for each of the following locations if they exist (not all of these may be present), and change all values to 1. HKEY_LOCAL_MACHINE\SYSTEM\Current Control Set\Control\Class{4D36E968-E325-11CE-BFC1-08002BE10318}\0001 HKEY_LOCAL_MACHINE\SYSTEM\Current Control Set\Control\Class{4D36E968-E325-11CE-BFC1-08002BE10318}\0002 Restart the computer. Go to Display settings and, under Resolution, change the setting to a higher resolution.

On a Lenovo S10-3T, the key is found in one of these two places:

OR