"WIFI: no hardware installed"

After restarting my mac one time i turns back on and shows that message idk what to do i restarted multiple times nothing. I have a 20 inch early 2008 imac with 10.13.6 dosdudes1 patcher i cant even go to recovery mode and reinstall the os because my imac only support till el capitan and its just has an 🚫 sign somebody help