boot_device_led is red and no signal via HDMI/DVI-D

NikolaNidza

Commendable
Sep 11, 2016
12
0
1,510
Hello everyone, I build new PC week ago and when I connect to new PC using HDMI(MB)-HDMI(monitor) or DVI-D(MB)-HDMI(monitor) it doesn't receive signal.
I tried to troubleshoot PC by myself but I always ended up with BOOT_DEVICE_LED staying lit and no signal on monitor.
IMPORTANT: I sent MB to retail shop and in their service it worked with Pentium G4400.
My build:
i5 6600k
Asus z170-Pro
2x8GB of Kingston Savage XMP 2400
Samsung Evo 750
WD Blue 1TB
Seasonic M12II-750w Evo

I tried:
-Removing everything and building from scratch
-Replacing cables
-Using single RAM in each ram slot
-Pressing MemOk! button
-Booting without any storage device
-Booting with HDD in different SATA ports
-Booting with SSD ^^^
-Booting with only CPU, Cooler and RAM
-Booting with and without any peripherals
-Booting with Bootable USB stick(different USB ports)
-Shortening pins to clear CMOS
-Removing battery


Now I m left with more expensive options:
- to buy 2gb 2133 ram?
- to buy Display Port cable?
- to buy new CPU?
- to buy GPU?

I planned to buy 1060 but since I don't know what is problem I didn't want to buy it and then to be left without money for changing other components.
This is my first build but I took protection measures, worked on flat wooden desk, concrete floor, that anti-surge on my wriest.

Now I m really low on options, also other thing going on my mind is that pc might be starting but not showing any signal, and that Boot_Device_LED is lit because I got no OS?
 

NikolaNidza

Commendable
Sep 11, 2016
12
0
1,510
I managed to find problem, it was lack of drivers on iGPU, I just used my old NVidia 9500gt and everything worked fine, that LED was lit because I had to set USB as top boot priority, for everyone having similar problem just try using some GPU.