SanDisk Cruzer Micro 4 GB flash drive

When I plug in my SanDisk Cruzer Micro 4 GB flash drive into the USB port in my computer I keep getting this message “An Error has occurred while initializing Launchpad: Error code 1010. Launchpad. When I try to double click on U3 System in My Computer I keep on getting this message “K:/ is not accessible. 

In My Computer I can see both U3 system ( G )and Removable disc ( H ) Double clicking on U3 system ( G ) says initazing U3 before giving the abobe error message error 1010.  Hovering over ( G ) drive shows free space: 0 bytes Total size 5.45 MB.  When I try double click on removable ( H ) disc it says please insert disk into drive H.

This problem has come out of the blue, I can use both my other cruzers another micro 8 Mb and a micro 16MB can anyone please help