No headlight

HI
On my 96 cavalier my headlight is't fuctioning at all ( daylight, lowbeam , hibeam ) but the others are just fine! it started with the daylights then the right low and high beam now it's both left and right!
i checked fuses, the are fine ,i even changed the DRL ... nothing
what could be the bcm ?
please help

thank you

could be a loose wire? or maybe your bulbs burnt out!

i cheked the bulbs they are fine...
my highbeam light indicator is always on
this is driving me crazy .... no mecanic wants to give me an estimate it could be from one hour to 10 ....

that happend with my g/f's 96... after about 2 hours and re wiring the front of her car with a tester.. we had to tap a few different wires becuase for some reason they weren't ground anymore... she still dosn't have DRL's but she has highs and lows back... i just took apart her dash and put a piece of black tape over the flashing light icon... your really just have to get in there ans start testing wires...