Atrain009

I actually thought it was my CPU, so I upgraded from the Ryzen 5 1600 to ryzen 7 2700x before even posting this. It's brand new, no bent pins This f'ing issue basically made me upgrade my entire setup except for the cooling and GPU lol.

Thanks for all help. Just gonna pick up a b450 tomahawk at best buy today and see if that solves it.

No worries! Thanks for taking the time to help out- 1) Yes, all four are exactly the same, all brand new: https://www.amazon.com/gp/product/B015FXXBW0/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 2) Yes, I only loaded default settings, no XMP profiles or anything like that. 3) Haven't tested yet, as this would force single channel, no? I'll test it and get back to you though. 4) I tried with only two sticks, in DIMMA2 and DIMMB2, per manual suggestion. Same exact issue. Recognizes both in BIOS (8GB each), but DRAM size is only 8GB. I thought the issue might be the two kits together, but it seems with even just 1 kit, it doesn't work.

Just reseated CPU, same issue. I tried with just two sticks int he correct configuration, DIMMA2 and DIMMB2, same issue. BIOS recognizes both sticks, but only 8GB is usable instead of the full 16GB. No idea what to do next ?

Speccy: http://speccy.piriform.com/results/tQrAL7POFfBKWlyhYSzdxBA Summary: I have 4x8GB DDR4 sticks installed on my MSI b350 Tomahawk with a Ryzen 7 2700x. Only half of it usable. BIOS & Windows RAM report: https://imgur.com/a/LcprqFH I have done the following: - Updated BIOS - Reset CMOS - Checked Windows 10 Boot Memory Limit - Double checked my RAM compatibility - Tested each RAM stick individually Any ideas???? Been banging my head against the wall for 7 hours now, reading thread after thread...