Had to step away for a while.
Final Update: No change with 5600X and downgraded motherboard bios. Still buggy bios display. Still unable to make any advanced bios adjustments. Out of desperation upgraded to 7C02v3E, most current version (5/2022). Bad move, won't work with either 2600X or 5600X. Not able to access M-Flash to re-downgrade, and Flashback (bios flash button on motherboard) would not work. Most likely does not allow downgrading bios. Found a bios flashing utility on MSI forum. Ran it and downgraded to 7C02v39, the actual first bios to support 5000 series on B450 Tomahawk Max. Even worse, no access to bios function at all with 5600X.
There is definitely something wrong with some component in my rig, most likely the 5600X, the motherboard, or the 1070ti. I tried 4 different bios versions, with none working correctly. Ended up reflashing to 7C02vB. I can make some minor adjustments in the bios, as long as I stay in basic mode (switching to advance mode locks up bios within seconds), and make one change at a time, then save and reboot. Strangely, it now appears to be in UEFI mode, not CSM, but since I can't get into the advanced menu, I can't check all the settings. I'll try Ryzen Master to check if it's in Precision Boost mode. At least I have XMP on now, so the memory is at 3200 and not 2100. I'm going to try to run it with the 5600X and see how it goes. If I run into issues, I'll go back to the 2600X.
Short of purchasing a new motherboard and GPU, and/or taking the rig into a shop, I really can't figure out what the issue is.
I reflashed to 7C02v3A, as far as I can tell, that may be the first Bios for this board that supports 5000 series CPUs, but I could be wrong about that. Flash went fine booted okay, with 2600X.
Then, the plot thickens. I was getting ready to do a clean install of Win 10 in UEFI mode. If I switch to UEFI mode, the system will not boot, even with a brand new NVME M.2 drive as the only storage, and a Windows installer flash drive. Just a black screen. I wondered if it was a video card issue, since the LEDs on the board appeared to be doing something, so I switched to a 660ti I had, and at least I get a message (video card does not support GOP, switch to CSM mode). I'm guessing the 1070ti is also having a similar issue, but is not showing message screen.
As far as I can tell, the 1070ti should support GOP. I bought it used, so I wonder if a previous owner flashed a custom bios, or if it got corrupted somehow? I've never flashed a video bios, so I'll have to look that one up. But that would explain why the Bios' keep defaulting to CSM mode. I wonder if it also might explain my 5600X issues? Not sure why it was never a problem with the 2600X?
So anyway, I guess the next step is to figure out how to reflash my 1070ti, and hope I don't brick it in the process.
Damn, this was supposed to be a quick and easy upgrade. Not my day.
gabe50200 got a reaction from Mister Woof in 5600X Upgrade problems
