WD My Passport Studio not connecting

I have a Dell Studio laptop running Windows 7 Home premium 64 bit. When I try to connect the external drive it doesn’t connect and the light on the external drive is blinking all the time. When I ran my weekly backup on December 26th, everything was OK. Any ideas why I can’t connect anymore.
Best regards.

Hi, welcome to the community.

Have you tried different computer? Have you tried different USB cable and USB port? Does the drive comes up at the device manager screen?