Thanks for your quick response to my problem. Windows Explorer does not see the SD Card.
Dell XPS8700 running Windows 8.1 Per your advice all Windows & Drivers updates are current.
Ran the Device Manager and SD Card is displayed as hidden in "Disk drives."
Device Manager displays the following message in the Device Properties dialog box, on the General tab, in the Device Status text box: Currently, this hardware device is not connected to the computer. (Code 45)
I have tried 3 different SD Cards, rebooted PC.
All diagnostics run with no problem. But original problem still exists.
Here are the results of the Dell Diagnostics:
Good news, no errors were found during the diagnostic scan. Please scroll down to review your diagnostic results and suggestions for improving the performance of your system.
Card Reader TOSHIBA TransMemory USB Device
Linear Read Test Check Alert Icon Passed
Card Reader TOSHIBA TransMemory USB Device
Pattern Test Check Alert Icon Passed
Card Reader SanDisk Cruzer Fit USB Device
Linear Read Test Check Alert Icon Passed
Card Reader SanDisk Cruzer Fit USB Device
Pattern Test Check Alert Icon Passed
Carl