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Solved Black screen flicker after ram upgrade

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Dal777

PCHF Member
Oct 2, 2020
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#1
Hello I recently upgraded my RAM from DDR4 16gb to 32gb. Same RAM which is the TridentZ Gskills 8gb 3200mhz sticks. In bios I tried running on auto but the RAM will only run at 933mhz. So then back into bios changed from auto to the DOHC (I think that's what it's called ) anyway and chose my RAM thing that shows my timings. Then save and boot then its showing Ram running at 1600mhz so 3200 when doubled. So everything seems to be working great but after about 5 min the screen starts to flash to black then back to normal. Then a min after the same thing then eventually the PC shuts down reboots then get blue screen error codes. (STOP CODE:SYSTEM_SERVICE_EXCEPTION). So then I have to manually shut down then back in to bios put back on AUTO and they're back to 933mhz. Note I tried all four sticks one at a time, then two sticks at a time on the 3200mhz DOHC setting, and they work fine both sets and its showing 1600mhz in task man. Any help would be appreciated. Also, I'm wondering if the RAM needs more voltage?

CPU:Ryzen 2700X
32gb Ram 3200mhz four 8gb sticks
64bit OS win10 pro
GPU: Duke 1070Ti
EVGA supernova 650watt G3Gold power sup
 
#2
Hello Dal777,

Dal777 said:
CPU:Ryzen 2700X
Click to expand...
Your CPU only supports RAM up to 2933MHz, specs are here

Try restoring the MBs default factory settings in the BIOS, they are sometimes listed as one of the following " factory defaults" "most stable" or on newer boards "optimized" please note that if you have both the "most stable" and the "optimized" options in the BIOS you should choose the most stable" option as in this instance the "optimized" settings are a form of overclocking that can cause instability.

Once you have done the above, restart the computer while pressing the key that gets you into the BIOS, once in the BIOS, check that DOHC is enabled, do not change anything else, save the new settings, exit the BIOS, allow the computer to boot as normal, test by using the computer as you normally would then post back with an update for us.
 
#3
Wow I made my build in pcpartpicker and asked multiple people if everything was ok and no one noticed that my RAM was too high. Thx I’ll try and get back to you.
 
#4
The RAM would most likely be ok if you overclocked the CPU as well but OCing should only be done by those who have the knowledge, never understood it myself tbh and fwiw it may not be the problem here but it was the only thing that stood out.
 
#5
Ok, so I reset the MB and then enabled the DOHC. The system was unstable with RAM set at 3200mhz, it gave me the "Diagnosing your PC" then "Attempting Repairs" then ("Automatic Repair" blue screen) I choose to shut down. So then I lowered RAM to 3000mhz and it worked fine. So then I choose F7 in BIOS then the Asus OC setting to 08% and that was stable. So then I slowly increased the RAM and made it to 3066mhz stable. Maybe some day I might OC the CPU to try and get the 3200mhz out of the RAM. But for now DaVinci Resolve is working better than ever before. Thanks for your help.
 
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