thanks i tried another sd card and it worked

hi
i have been using my raspberry pi zero w daily but for some unknown reason today it couldnt boot. i checked by changing power supply but nothing happened not even a single blink. what should i do? wait until the "only one per customer" thing expires???
(i have raspbian installed)

Hi i wanted to buy a raspberry pi zero but im not sure which version i need. I already have a usb wifi but i am not sure if it is compatible (when i tested it on a pc running Linux it was working fine)