Thanx for the response and advice to repost here. I appreciate your taking the time to consider my particular situation. I won't restate here all the details of what I've tried since November 2019, please refer to my post where you first responded amdcleanuputility
To summarize, the system (listed below) was built Summer 2019, a 2nd pc to use as a 'home theater pc', hooked up for internet access and streaming music/movies. Previously, I used an asus intel i3 laptop for the same hook-up, with good results. Initially the Ryzen build was working great, much faster than the old i3 and no probs. Somewhere around November, the AMD Adrenalin software suggested an update, and I went ahead. Since then, I got repeated BSOD's with "Video tdr failure atikmpag.sys" error codes. Many hours of research (here and elsewhere) resulted in many references to the 2400g and these BSOD's along with numerous and varied suggestions regarding both the Adrenalin software installation procedures, as well as Mobo and RAM settings. Many hours were spent trying one particular suggestion of 'settings', then using the 'DDU' procedure to methodically clean and reinstall drivers (AMD chipset, then Adrenalin). When one failed, another was tried and so on down the list. All resulted in various lengths of time before BSOD came back. Please note this long list of attempts has included 2 clean installs of Windows 10.
I would also note that this AM, after 17 BSOD's over a 2 hour period, I uninstalled the Adrenalin software. Currently running only the 'Microsoft Basic Display Adapter' for about 6 hours with no BSOD's. This is with RAM set to 2133 MHz, 1.2v, and 15 - 15 - 15 - 36. Over the past months, I have resorted to uninstalling the Adrenalin software and run with only the 'Basic' driver, for days at a time with no BSOD's but of course limited video performance. If/when I decide to 'try again' to install Adrenalin, BSOD's emerge ("video tdr failure" and sometimes "video schedule internal error").
Last I'd note seeing numerous posts (here and elsewhere) referencing the Corsair RAM (listed below), some citing good results paired with the 2400g and some citing BSOD and other problems. Some praising only the 'samsung' version, cursing the 'hynix' version and some claiming no problems with either!
CPU: Ryzen 5 2400g
MoBo: MSI B450m Gaming Plus (BIOS up to date)
RAM: Corsair VENGEANCE LPX 16GB (2 x 8GB) DDR4 DRAM 3000MHz C15
* Label on each RAM module:
Part No. - CMK16GX4M2B3000C15 SK Hynix, ver5.30
* Voltages: Current = 1.2 v @ 2133 MHz (have tried to run at 1.35 v per RAM specs, at various speeds up through the 3000 mhz spec, BSOD's still occurred after change in setting and after drivers reinstalled).
* Settings for RAM: (Per CPU-Z) Current 15 - 15 - 15 - 36 (have tried '15-17-17-35' which is Corsair's spec for this RAM at 3000 MHz, 1.35v = BSOD's. Have also tried XMP profiles.
Again, I appreciate your time to consider this problem.