If you're having trouble uninstalling Opera GX on your ThinkCentre Lenovo computer running Windows 8.1, you can try the following steps:
Open the Control Panel by pressing the Windows key + X and selecting Control Panel from the menu.
Click on Programs and Features.
Find Opera GX in the list of installed programs.
Click on Opera GX and select Uninstall.
Follow the prompts to uninstall Opera GX.
If the above steps don't work, you can try using a third-party uninstaller program to remove Opera GX from your computer. You can find many free uninstaller programs available online that can help you remove stubborn software.
Alternatively, you can try reinstalling Opera GX and then uninstalling it again using the steps above. This may help resolve any issues with the uninstall process.