This is caused by a virus or malware mostly. This type of viruses and malwares spreading through a flash drive which you are taking everywhere.
The problem is when you have removed the virus or malware using a virus
remover or malware remover still you can't open drives by double
clicking on them. This happens because the changes that happen to
registry values not been set to normal by the virus or malware removing
software. So we need to manually re correct them.
