I have a dell optiplex 390 motherboard and i tried installing a gpu inside, gtx 960 to be exact, yesterday I've been trying all day and night to get this thing working. I followed some tutorials on how to fix a gpu that gives a monitor no signal but they don't work. I really need help, ive been waiting soo long for my gpu to arrive and use it to play games but this had to happen if anyone has a way to fix it please tell me, i also tried to access my bios but it takes me to system control which looks nothing like the bios i have seen on these yt tutorials, I'm guessing i have to disable intergrated graphics in bios but it seems my pc has no bios, when i plug my hdmi into the motherboard my pc works fine but when removed and plugged into gpu the screen receives no signal, i'm genuinely depressed from this, any help will be appreciated. thanks