I have a Sandisk Ultra Class 10 16gb and 32gb that my card reader is not detecting. When they are in my DSLR Camera they work just fine but when I try to read them on my computer nothing happens. I have another 16gb that is read just fine so it does not seem to be the reader. I have windows 7.
Hi RAI1028,
Dear member of SanDisk Community, welcome.
Perhaps, if the cards, were formatted in the camera, then, are not detected by the PC.
But, please, try the cards in a laptop, directly to your port-card, and see what happens.
Luck, and then you tell us, what happened, please.
Regards, Alfred. (Google translated)
i also have same issue, purchased on 22 July & been using it since.
suddenly 3 days ago the sd card not detected in my phone, i put it on card reader also not detected by my pc…
previuosly been purchased the 16 gb for my galaxy note 2 and working well not any single issue happen, then purchase another one for my redmi 1s & the problem appears,
the online store that 1 purchased this sd card says that i need to provide the box for warranty claim…
i dont have the box due its already 3 months ago & no mention earlier that i need to provide the box for warranty claim…
been emailing also to support but no answer till now… 
Hi Amlbuton,
Dear member of SanDisk Community, welcome (1) .
Please, do not grieve more.
Contact _ SanDisk Technical Support _ who will replace the device, if it’s authentic and is within warranty.
Link: http://www.sandisk.com/about-sandisk/contact-us/
Luck.
Regards, Alfred. (Google translated)
