No post or boot

[LuticZen]

Old: asrock b550 phantom gaming 4

New: MSI MAG B550 TOMAHAWK AM4 AMD

AMD Ryzen™ 5 4500 6-Core

nVIDIA GeForce RTX 3070

Silicon Power Value Gaming DDR4 RAM 16GB (2x8GB)

Apevia ATX-PR800W

This computer is brand new, I got all the parts 7 days ago from today and everything was working fine. I was in the middle of playing and the screen freezes and goes to diagnostics, I turned it off and when I tried to turn it back on it wouldn’t display or post. It’s not the graphics card we tested on a different pc and it’s not the motherboard because I returned the asrock and got the msi one. The MSI one displayed for a sec but we missed bios and turned it off only for vga led to turn on. Same problem I had on the first board. The first board which the initial crash happened on first lit up on VGA and after hours of trouble shooting it went to boot. We tried with one ram, reset the cmos, tried hdmi on the first board. We moved everything over to the new board and same problem VGA. Pretty bummed out, we’re gonna try to trouble shoot again tomorrow but it’s not the gpu or mobo, I doubt it’s the cpu because it’s brand new and worked fine. Maybe it’s the psu but everything lights up all the fans spin and rgbs light up.

Any help would be really appreciated.

[PeterOz]

What speed is your ram?
I would also make sure the bios suits your cpu.
The MB comes with a bios flash button.
You download the bios to a usb stick and put it in the flash bios port. https://download.msi.com/archive/mnu...50TOMAHAWK.pdf
The link shows you the port.
READ PAGE 33 ON HOW TO FLASH THE BIOS.
If you do it wrong you have an interesting paper weight.
https://www.msi.com/Motherboard/MAG-...WK/support#cpu

[PeterOz]

is your ram one of these

Silicon Power	SP008GBLFU240B02	DDR4	2400	2400	Silicon Power 4N8084HABE	1.2	SINGLE	8GB	√ |√ |√
Silicon Power	SP016GBLFU240B02	DDR4	2400	2400	Silicon Power 4N8084HABE	1.2	DUAL	16GB	√ |√ |√

[LuticZen]

This is the ram I have

https://a.co/d/34pIB7C

Im planning on updating the bios tomorrow with my friend who’s been helping me

[PeterOz]

If it boots make sure to leave all bios settings as is (defaults)

[Rustys]

What were the results of replacing the PSU as stated in another forum that you posted and folo0wing instructions in?

[LuticZen]

We tried updating the bios but my friend who I trust and knows more than me said the bios is up to date, we also tested the power supply with a volt meter and it gave 12 volts which is what it’s supposed to give for the cables we put it on. I still ordered a new cpu and psu that come in this Monday.

[LuticZen]

We tested the power supply with a volt tester and it seemed fine. I still ordered a new psu and cpu that come in on Monday. We also tried to flash update the bios but my friend who I trust said it was already updated

[Rustys]

we also tested the power supply with a volt meter

Bad PSUs can pass the test. The true test that eliminates a PSU from the equation is a replacement or trying that same PSU in another known working machine. Only these 2 can truly rule out a PSU.

If your fried has a working PSU that you can barrow than I would also try that. This would validate the PSU (possibility) or hardware.

Something else you might attempt is a different GPU.

[LuticZen]

Bad PSUs can pass the test. The true test that eliminates a PSU from the equation is a replacement or trying that same PSU in another known working machine. Only these 2 can truly rule out a PSU.

If your fried has a working PSU that you can barrow than I would also try that. This would validate the PSU (possibility) or hardware.

Something else you might attempt is a different GPU.

The gpu was tested to work on a different pc.

This morning I also turned the pc on in hopes that it would boot. It didn’t but this time the boot light was on instead of the vga. I’ll update tomorrow once we test the new psu first and if we need to the cpu

[LuticZen]

It turned out to be the psu!

[Bruce]

thanks for the feedback.
will close as solved. (y)