Komputerbay 64gb 1000x errors on 5d3

[Nang]

Hey everyone,

I received my Komputerbay 64gb card some days ago and it was working fine the first few days, but now it seems to be having problems. Every time I record video (both raw & non-raw formats), it would record for a couple of seconds then I would get an "Err 02 - Card1 can not be accessed reset/change card 1 or format card with camera" message. I tried formatting from my 5d3, but I kept getting a message that card1 can not be formatted.

So then I plugged the card into my computer and tried formatting from there. I would get a message saying I can't format the card. I'm assuming this means it's defective?

thanks