So i built a new pc for my cousin. Everything looked fine but when i started to turn it on everything went on right. So i went to the monitor to press delete to open the bios and let it post but nothing happens. The monitor says no signal from the monitor and i cant seem to see the reason why it doesn't want to display anything on the monitor. I went back to check the graphics card everything seemed visually fine even on the motherboard. I tried reseating the ram reset the cmos used a the jumper from the motherboard re-seated gpu, cpu cooler, cpu, hard drive and optical drive. but nothing is working we started fiddling around with display adapters using hdmi, vga and dvi but nothing seems to want to display anything on the monitor. The motherboard does not come with a system speaker so we cant check the beep. so we are going to use what we have. The hard drive spins the cooler spins all case fans spins except the asus strix r7 370. I assumed it was supposed to do that since the fans arent supposted to spin at idle. The mouse and keyboard situation is that the keyboard does not light up and do anything but the mouse lights up and blinks sometimes. NEED HELP
Cousin Pc Specs:
AMD Athlon X4 860k
Arctic Freezer Alpine 64 Plus Rev. 2
Asrock FM2A58M-VG3+ R2.0
Patriot Signature 8gb ddr3 1333 Mhz
Seagate Barracude 1tb
Asus Strix R7 370 4GB
EVGA 430W 80+ PSU
Lite-On iHAS124-14 DVD/CD Writer Acer G226HQL Bbd 21.5 inch (1920x1080) monitorCooler Master Devastator