hard drive unhide

 Click Start
Click Run
 Run Dialogue Box show
  Run Dialogue Box-type gpedit.msc then enter
  show the Group Policy Window 

 Local Computer Policy   User Configuration then click
  then right side double click Administrative Template

double click Windows Components

double click Windows Explorer

in the Setting  click “Hide these specific drives in My computer” 

in the under Windows Explorer  click Display Properties
"  Hide these specific drives in My computer" box show
 in the Setting- select Not Configured
click apply,click ok