Cant startup mac
Ive tried everything i can think of. Normal startup will load fully then freeze. Ive tried cmd r, the apple appears but begins loading, i try internet recovery, it loads but then after a couple hours i get an error, i tried safe mode, i get like a do not enter sign, i go into terminal, i get an error and cant type, and when i just. Anything else to really try?
iMac 27", macOS 10.13