New PC build boots and powers almost everything. No signal sent to monitors and cant reach BIOS

steveyy

Commendable
Feb 27, 2016
1
0
1,510
So my worst fear has come alive. I think i have a defective PC part in my new build. Im thinking its the mobo (TL:DR at bottom)

the essential parts:
ASRock H97M PRO4 Micro ATX LGA1150 Motherboard
Intel Core i5-4460 3.2GHz Quad-Core Processor
PNY anarchy 16GB DDr3-1600 memory
EVGA SuperNOVA 750 B2 80+ BRONZE, 750W Semi Modular NVIDIA
2 SSDs, 2 HDDs
1 r9 270x

So heres the case, everything was plugged in fine (CPU power, 18v power, GPU, etc) plugged into a monitor, and no boot into bios. BUT everything powered on..the gpu, the HDDs (i could feel the vibration on them)....the cpu fan and 2/3 case fans...but one case fan didn't (it was plugged into a 3 pin chassis fan) but when you plug it into a 3 pin CPU fan on the mobo, it works. so thats a bit fishy.

So i did some googling, at the time my monitor was plugged in via the GPUs DVI, so i thought the BIOS defaulted to it BUT since the latest driver wasn't on the computer for the gpu, it makes since it wouldn't work....so i unplugged the gpu, plugged into the mobo graphics, tried again....nada. all power to everything but still nada signal

troubleshotoed multiple things....i did a CMOS reset like 5 times, tried the gpu again, even used a different power connector for the 8 pin CPU. nothing changed. the monitor keeps getting no signal. took out the CPU and saw no bent pins either

I tried out RAM thats in another pc in my house and no luck stil. I shifted the ram around on all 4 sections and nothing worked

any ideas as to what it can be folks? The fauly chasis fan connector is my only hint that it might be a dead mobo.

TL:DR: newly built PC boots into full power, but monitors get no signals. Tried both GPU and mobo graphics. done multiple CMOS reboots, the machine can POST but not get a signal to the monitors. think its a bad mobno due to one chasis fan connector not working
 
Solution
I had a similar problem last week, when trying to add some extra RAM. In the end, I diagnostified my RAM slots 2 and 4 where broken, and plugging a stick in them would cause just the same problem. Still, I didn't knew the cause, so i looked for some extra info, and looks like it should be an issue related with bend pins (I must have one bended pin I guess). I dont see the way you could just bend a pin or more by installing new drivers, to be honest, but still I think it's orth mentioning.

-Arke-

Distinguished
Dec 26, 2015
197
0
18,710
I had a similar problem last week, when trying to add some extra RAM. In the end, I diagnostified my RAM slots 2 and 4 where broken, and plugging a stick in them would cause just the same problem. Still, I didn't knew the cause, so i looked for some extra info, and looks like it should be an issue related with bend pins (I must have one bended pin I guess). I dont see the way you could just bend a pin or more by installing new drivers, to be honest, but still I think it's orth mentioning.
 
Solution