How to remove black box in Chrome
1] Clear cache
If you are facing this issue, one trick to address this issue, available at the user’s disposal is – Clearing the browser cache. To clear the Chrome browser cache, click the Chrome menu > Select “Tools” and chose Clear browsing data. In the dialog that appears, select the “Empty the cache” check box. Select the amount of data that you want to delete from the “Obliterate the following items from” drop down menu. Click the Clear browsing data button to confirm.
2] Turn on the Hardware Acceleration
If the fix ends up showing no results, try the following: Open your Chrome browser > Go to Settings. Turn on the Hardware Acceleration option in Settings if disabled. For that, click on Chrome menu, select Settings > Advanced Settings, scroll down under system, and check the box adjacent to ‘Use Hardware Acceleration when available’ option. Thereafter, find and enable this flag in Chrome: Enable slimming paint phase 2.
If you’ve Hardware Acceleration already enabled, verify if disabling could resolve the issue permanently.
3] Disable extensions
Try disabling all extensions in Chrome.
4] Reset Chrome
Reset Chrome browser and see if it helps.
5] Create a new Chrome Profile
Create a new Chrome Profile and see if it resolves the issue.
6] Scan your PC
Sometimes, the problem may be caused due to malware infection, so scan your computer with a good antivirus software. Let us know if anything helped.