Can't recognize my SIM card, after flashing ROM.

Hi,

My Nexus 5, can't find my SIM card, or others SIM card.
He says 'No SIM card, no service'. Also i can't change from 2G or 3G it's unpossible.

What can I do? I flashed the Xtraslim rom.
Also flashed the RADIO and Bootloader, all with TWRP 2.8.0.1.

Thanks.