03-11-2018, 07:42 PM
You may try to boot a linux from USB key to see if it works, just to eliminate a possible software problem.
LL 4.8 running on Dell Optiflex 760
LL 4.8 running on Asus X52J
LL 4.8 running on Toshiba Satellite C670-14W
LL 3.8 (32 bits) running on HP Pavilion
LL 5.0 running on Samsung RV515
LL 4.8 running on Asus X52J
LL 4.8 running on Toshiba Satellite C670-14W
LL 3.8 (32 bits) running on HP Pavilion
LL 5.0 running on Samsung RV515