How do I enable my USB controller in windows 7, 64 bit? I have had a PNY 256 flash drive since March 2015 and it worked fine until yesterday. Device Driver "sees" the drive but when I click on it, it doesn't work. "My Computer"doesn't even see the drive. The same thing happens when I insert the flash drive into either of my laptops - each a Lenovo T530 running Windows 7 64 bit. PNY online tech support says enable my USB controller. but I don't know how to do that or find it.