OK, so I have the SD/TF card error thing, and I can't format...

I've been digging around, and here's exactly what's wrong1. I have the SD/TF card error on my R4
2. I can't read the SD card via USB adapter on my computer
3. I can't format it because everytime I try, I get the same "windows was unable to complete the format" errorIs there anything I can do, or do I have to get a new SD card?

it sounds like you need a new microSD card.

HOW TO FIX THIS: youtube = /watch?v=-WaAPFboNqgI created a simple video on how to fix this. watch it: youtube = /watch?v=-WaAPFboNqg
or google /watch?v=-WaAPFboNqg

That will not work if the computer cannot even recognise the card. The card is dead and must be replaced.