Cool dog Rubik's Cube and raindrops disappeared when dragged to the lower right corner of the desktop.

This is probably a plug-in like a pop-up advertisement. You can use anti-virus security software with plug-in cleaning function to clean it.

Take 360 security guards as an example.

As shown in the figure below, after detecting the plug-ins, check whether there are plug-ins such as "advertisements" and "pop-ups" in the "plug-ins that need to be cleaned on demand", or plug-ins that are not commonly used and have poor scores, and you can clean them.

If the problem cannot be solved after cleaning, it may be an advertisement pop-up window of some software being used, and you can end the process.

If you don't know how to "end this process", you can try it with 360 acceleration balls.

As shown in the figure below, check the box to the right of suspicious and redundant "programs/services", and then click "one-button acceleration".

If the problem still cannot be solved, it is recommended to consult relevant experts.