New PC. Turns on but flashing DRAM

[SilverWind]

Hey guys! 

Building my 2nd ever gaming PC from scratch and ended up switching over to the AM5 platform. 

Upon my first start my motherboard’s DRAM light started blinking once approximately every 5-8 seconds. 

Upon which I hear the fans flicker a bit, my peripherals turn off and my monitor loses signal. At one point I saw the bios boot screen for about 1 second before the DRAM light went off again and lost it. 

I’ve reseated the ram 3 times now and switched their positioning as well. 

My only thoughts would be either I’ve got bad ram or I’m missing some mistake I don’t know I made. 

For reference I have the following components installed:

AMD 7800X3D

Gigabyte RX 6800 XT OC

2x 16GB Corsair Vengeance DDR5 6000mhz CL40

MAG B650 Tomahawk Wifi

I am aware that previously some people were having issue with ram over 5600mhz but to my knowledge it was fixed with the mobo I picked out. 

I would greatly appreciate any feedback. Just spent about 4 hours putting the whole new system together and want it all to be ready for the CP2077 DLC.

[TylerD321]

Is your ram by chance model number "CMH32GX5M2B6000C40"? That is the 6000 mhz cl40 ram on the QVL list.

 

Did you update your bios? Latest update says improved DDR5 compatibility.

 

https://www.msi.com/Motherboard/MAG-B650-TOMAHAWK-WIFI/support#bios

[SilverWind]

32 minutes ago, TylerD321 said:

Is your ram by chance model number "CMH32GX5M2B6000C40"? That is the 6000 mhz cl40 ram on the QVL list.

 

Did you update your bios? Latest update says improved DDR5 compatibility.

 

https://www.msi.com/Motherboard/MAG-B650-TOMAHAWK-WIFI/support#bios

Yes, that is my exact model. 
 

I thought you had to be able to boot into the bios first to update it?

 

Thanks

[TylerD321]

9 minutes ago, SilverWind said:

Yes, that is my exact model. 
 

I thought you had to be able to boot into the bios first to update it?

 

Thanks

Check out page 22 for bios flash button location and page 56 for instructions. https://download.msi.com/archive/mnu_exe/mb/MAGB650TOMAHAWKWIFI.pdf

 

Another thing you could try first before fiddling with that is to see if you can get it to post with only one ram stick installed. I would try both sticks in each slot until you find one that works. If that doesn't work, flash bios with button. If those don't work, it is either a mobo or ram issue.

[SilverWind]

Gotcha. 
 

I’ll give that a try in the morning. 
 

I’ve already tried all of the different ram configurations and it only made it worse. (Both CPU and DRAM lights stayed on). 
 

Additionally, I should be receiving a replacement set of Ram either tomorrow or Monday to try with better CL30 timing.  
 

this one: CMH32GX5M2B6000Z30K

 

Someone else mentioned it may be because the timings were too slow with CL40. Not sure.
 

Again, thank you for the detailed help. This is all a bit above my level of knowledge.