Sandisk Ultra 16 GB MICRO SDHC memory Card suddenly not detecting in mobile or PC

Hi Team,

I need some help at the earliest. My  Sandisk Ultra 16 GB MICRO SDHC memory Card suddenly not detecting in mobile or PC. 

The SD CARD is not detecting at all in PC also. No drive is getting displayed even through Disk management option. 

Checked Device manager in case any software update required for USB driver but all looks fine.

Tried all possible ways i.e. Through Disk Mangagement option changing the drive letter is not enabled. its grayed out.

CHKDSK option did not work out. Neither various softwares are able to detect the drive. Only through one of the  software it

displays OKB RAW Files .  Attached is the screenshot. Kinly help soon . Appraciate any quick response and support from anyone.

Regards,

Abhi