Question New build won't boot at all ?

[Bionista]

So, I've built a new PC for the first time.

After several hours of putting it together, I finally was about to turn it on to see if it truly works...it gave me no signal, so I wasn't sure if it was booting, let alone POSTing in the first place.

First time I did it, me and a friend tried out the common solutions to the VGA problem;

Resetting CMOS, updating the BIOS on the motherboard to the latest version, reseating the CPU, RAM, and the GPU, each and every part I made sure that everything was connected properly.

Through this set of trial and error, we found out that my previous GPU, a Powercolor Red Dragon 6800 XT, was a dud, so I had it replaced with a Sapphire RX 6800. It gets power, fans are turning on, but there's still no signal.

I'm really at my wits end here, I've been trying to solve this problem for weeks now. Any advice or solutions I can try out??

Parts:
CPU: AMD RYZEN 5800X3D
GPU: SAPPHIRE RX 6800
MOTHERBOARD: MSI B550-A-PRO
RAM: CORSAIR VENGEANCE DDR4 2X8GB RAM (16 GB)
HDD: SEAGATE 2TB HDD
SSD: SAMSUNG EVO 970 500GB SSD
PSU: CORSAIR RM750X PSU 80+ GOLD

 

[rocktalkrock]

What speed are you trying to run the RAM? Have you tried 3200MHz?

 

[turtletarget111]

It sounds like you have access to the BIOS, which is good. You are going to want to double check the boot device and make sure the order is set correctly. You will need a USB that is at least 5 gigabytes, and has the Windows Media Creation Tool properly installed on it. Make sure the thumb drive is plugged into a port on the back of the motherboard, and not plugged into one of the ports on your case; then ensure the stick is being properly detected in the BIOS. You should see the brand of the USB and the capacity. Once you have given the stick priority booting, restart your machine and there should be an on-screen prompt to begin setting up Windows.

If that fails, double check that your memory is being properly detected and set to the correct speed and voltage. There should be an XMP profile that matches the advertised speed and sets the voltage automatically. It sounds like your motherboard and graphics card are sending and receiving power, so you will want to diagnose your CPU next. You mentioned you already re-sat it in the socket, but double check that there are no bent pins on the CPU, and check that there are no fibers or hairs in the socket. This will cause the pins to not properly contact the pads. If all else fails, you might have a dead CPU.

 

[PC Tailor]

Have you ran through this entirely first?

"No POST", "system won't boot", and "no video output" troubleshooting checklist

"No POST", "system won't boot", and "no video output" troubleshooting checklist This checklist is a compilation of troubleshooting ideas from many forum members. It's very important to actually perform every step in the checklist if you want to effectively troubleshoot your problem. 1.Did you...

forums.tomshardware.com

It may seem like some of these are obvious, but please do run through the ENTIRE checklist, even if it means triple checking as most post/boot issues are small oversights or mistakes.