Resolution is the total number of the pixels on a display counted vertically and horizontally. There is a limit to the highest resolution for every screen present. If a program tries to overscale a resolution (like tries to set 4k resolution to an FHD display) you may notice “Resolution not supported” error message at the time of booting up. To solve the issue, follow these fixes minutely.
Fix 1 – Adjust resolution from Registry Editor
Adjusting the resolution in Registry Editor for all possible conditions will surely fix. Follow all the steps meticulously and the problem will be solved for sure.
STEP 1 – Open your device in Safe Mode-
You will need to open the Automatic Repair window.
In this case, it should appear automatically. If the Automatic Repair window doesn’t pop up automatically you will need to open it up forcibly.
1. Turn off your system.
2. Now, start your computer, and as soon as the manufacturer’s logo (like- Dell, HP, etc) is visible, you will need to press-hold the power key for 3-4 seconds to shut down your device.
3. This way, repeat this process of start-force shutdown-start for 3 times.
4. For the 4th time, let it boot up normally.
Automatic Repair window will appear as your computer boots up.
5. In Automatic Repair window, click on “Advanced options“.
5. Now, In Choose an option window, click on “Troubleshoot“.
6. Similarly, when you see the Troubleshoot window has appeared, click on “Advanced options“.
7. Now, in the Advanced options window, click on the “Startup Settings“.
8. Then, click on “Restart” to restart your computer in safe mode.
9. Now, you will see various special startup options.
10. Simply, press the “4” ( which is the ‘Enable Safe Mode’ option) key to open your system in Safe Mode.
STEP 2 – Modify resolution from the Registry Editor
1. Now, press Windows key+R to launch the Run window.
2. When the Run window appears, type “regedit” and then hit Enter.
Before making any changes to the registry, we suggest you create a backup of this registry. To do so, after opening the Registry Editor window, click on “File” > “Export” to create the backup.
If anything goes wrong you can retrieve your registry by simply importing the backup.
3. In the Registry Editor window, click on “Edit” on the menu-bar.
4. Now, click on the “Find“.
5. In ‘Find what:‘ box, type “yResolution” key.
6. Now, click on “Find Next“.
The registry editor will search for the ‘yresolution‘ key.
7. On the right-hand side, double click on the “DefaultSettings.VRefresh” key.
8. Now, click on the “Decimal“.
9. Next, set the ‘Value data:‘ to “60” and then click on “OK“.
10. Similarly, double click on the “DefaultSettings.XResolution” key.
11. Now, select the ‘Base:‘ as “Decimal“.
12. Then, set the ‘Value Data:‘ to “800” and then click on “OK“.
13. Finally, you will need to adjust the settings for “DefaultSettings.YResolution” key. Double click on it do so.
14. At first, alter the ‘Base:‘ to “Decimal“.
15. Modify the ‘Value data:‘ to “600” and then click on “OK“.
Now, you have to repeat all these steps for all other keys also. Follow these steps-
16. In the Registry Editor window, click on “Edit” on the menu-bar.
17. Now, click on the “Find Next“.
The registry editor will search for the next ‘yresolution‘ key.
18. On the right-hand side, double click on the “DefaultSettings.VRefresh” key.
19. Now, click on the “Decimal“.
20. Next, set the ‘Value data:‘ to “60” and then click on “OK“.
21. Similarly, double click on the “DefaultSettings.XResolution” key.
22. Now, select the ‘Base:‘ as “Decimal“.
23. Then, set the ‘Value Data:‘ to “800” and then click on “OK“.
24. Finally, you will need to adjust the settings for “DefaultSettings.YResolution” key. Double click on it do so.
25. At first, alter the ‘Base:‘ to “Decimal“.
26. Modify the ‘Value data:‘ to “600” and then click on “OK“.
This way, repeat the process to modify the resolution values for all the keys on Registry Editor.
After you have done so, close the Registry Editor window.
Shut down your computer. Now, start it again.
This time your computer will boot into 800*600 resolution.
STEP-3 Rectify the resolution manually-
As your computer booted in 800*600 resolution, you have to rectify it back to the highest possible resolution for your screen.
1. Press Windows key+I to open Settings.
2. In the Settings window, click on the “System“.
3. On the left-hand side, click on the “Display” settings.
4. Now, on the right-hand side, scroll down and then in under ‘Display resolution‘, click on the drop-down.
5. Now, from the list of the available resolutions, select the resolution which has “Recommended” beside it.
(Example– In this case, it is the 1920*1080 which has recommended beside it. So it is the highest resolution possible for this screen.)
That’s it! There will be no resolution issue further on your computer.
Fix-2 Uninstall and install the graphics driver-
Uninstalling and reinstalling the graphics card driver may solve the issue.
1. At first, press Windows key+R together to launch the Run window.
2. Now, type “devmgmt.msc” and then hit Enter.
Device Manager window is now opened.
3. In the Device Manager window, look for the “Display adapters” from the list, expand it.
4. Then, right-click on the graphics driver you are using, then click on “Uninstall device“.
7. If there is a prompt to confirm the uninstallation, click on “Uninstall” to uninstall the driver from your computer.
Once the display driver is uninstalled from your computer, close the Device Manager window.
8. Now press Windows Key+R to launch the Run window again.
9. Next, type “appwiz.cpl” and then hit Enter.
10. In Programs and Features window, scroll down and one-by-one double click on all softwares related to graphics to uninstall them sequentially.
This process may take some time.
In the next steps, we are going to install the graphics driver again-
Method 1 –
Restart your computer. Windows will install the default version of your graphics driver. This will solve your issue.
Method 2 –
If rebooting your computer didn’t install the driver then you have to install the driver yourself. Follow to install the driver manually-
1. Press Windows key+X and then click on the “Device Manager“.
2. In the Device Manager window, click on “Action” on the menu-bar. Now, click on “Scan for hardware changes“.
Once the graphics driver is installed on your computer, your problem should be solved.
Method 3 –
The final method to solve the issue is to update your graphics driver.
1. Type “Device Manager” in the Search box beside the Windows icon.
2. Click on the “Device Manager“.
3. In the Device Manager window, again expand “Display adapters“.
4. Right-click on the graphics driver that you have just uninstalled, and then click on “Update driver“.
5. Now, click on the “Search automatically for drivers“.
Windows will now search for the latest version of the graphics driver and install it on your computer.
This will surely fix the resolution issue on your computer.
Sambit is a Mechanical Engineer By qualification who loves to write about Windows 10 and solutions to weirdest possible problems.