[Q] wiped everything WITHOUT a ROM file topic

I want to flash SlimROM, but I think I messed up.

I installed CWM, and wiped everything I needed to (factory, data, cache, system) WITHOUT putting the SlimROM zips in ahead.

Right now I can get into fastboot and CWM.

I tried installing with adb sideload, but the device turn to unknown device (Android > Nexus 5) when I access the adb sideload function.

Is there a driver somewhere that I missed?

Any help would be great!