[Windows Central Question]

I recently installed a microSD card to store extra stuff in (apps, photos..). When I first installed it, the phone said that the card needs attention. So i went to Storage Senses, tap the SD card tab, then tap "format SD card". But then I received a message saying the SD cannot be formatted and use a different one. Note that this is a brand new one.

P/s: I'm using the Lumia 430 Dual Sim.

[grantpwarren]

Try formatting with a computer.

[TheSupportRole]

But I can't insert it in my computer.

P/s: I'm still the same guy

[grantpwarren]

Get cheap usb memory card reader/adaptor or ask friends if you can borrow one.

[Franmartin]

Check to see first that the SD card is not write protected. If not, then try the SD card in some other device. These steps are necessary to verify about the actual issue.
If everything is all right then, simply download the SD card formatter from SD card association website sdcard.org. Ofcourse, try some other SD card formatter also.