My Lenovo P-780 Android phone was operating normally today until it suddenly crashed for no apparent reason.  I was able to eventually restart it but it soon became clear that many of my apps, basically all those stored on the  Micro SD (32gb) external memory card were gone. 

 

I went into "Settings--Storage" and under "External Storage" it warned of a damaged SD card.

 

Along the icon area at the very top of my home screen is a warning triangle and next to it a icon of a SD card with an exclamation mark within. 

I tried un-mounting and then remounting the card but no change. Obviously a problem with the memory card.

 

Does anybody know of a method of troubleshooting an SD card using a laptop with the defective memory card inserted via adapter into the card reader.  There are many files on that card that I would hope to recover.

 

Any suggestions welcomed.

Files could be recovered by some windows programs. There are many. It is same as harddrive recovery. Connect it to a usb microSD reader and connect to your pc. Partition recovery programs should handle the rest.