how about explorer option...
click the folders icon or press Window Key + E
did you able to browse your D drive in explorer mode..
also go tools menu in windows explorer ->folderoption->view
the select show hiddenfiles
uncheck hide extensions for known file types
uncheck hide protected OS files
then go to windows explorer browse your D drive and look for any hidden virus file
you can also use wirrar to browse you D drive, it will shows all the files including hidden & virus files...
what about antivirus package..
get avira & malware bytes & scan you pc..