Test your CMOS battery voltage, if the voltage on it is borderline unplugging it to do something (i.e. change out RAM) can let it "recover" just enough for one more boot (or a few depending how borderline it is). I saw the same issue on 2 of my 4 MS01's, after replacing the CMOS battery. When testing my (bad) CMOS battery with a mutimeter the voltage on it was ~1.17v as opposed to the 3v it should be (and the replacement is).Hi,
I am running the Crucial 96GB kit but I have the same issue with my second unit now. The unit boots fine and runs perfectly, memtest passes, VMs start etc.
But the second I turn off the power for the MS-01 (either via disconnect or a shutdown for a longer period of time), the next boot causes the MS-01 to bootloop (it turns on, then quickly off, and does not even get to BIOS). At first, I thought it was a BIOS issue, so I disconnected the CMOS to clear it and then reconnected it. The MS-01 booted with no issues after the memory training was completed. I then shut down, plugged the CMOS back in, and it started fine. I performed a normal shutdown again (or disconnected the power cord), and I encountered the same issue. Weirdly enough, this didn’t happen at all when rebooting.
I sent the video to Minisforum and received an RMA unit.
I tested the RMA unit with their set of RAM, and everything worked fine, with no problems. I replaced the RAM with my Crucial kit, and the same behavior occurred on the new unit. This made me think, and instead of disconnecting the CMOS and wiping the entire BIOS, I simply removed and reinserted the RAM sticks. To my surprise, it booted well again. However, after performing the shutdown process, it bootlooped again.
I tried swapping back to the factory RAM, and everything works fine across multiple shutdowns.
Any idea what else I could try or do?
From what I have seen/read elsewhere this is not uncommon for the CMOS batteries in these units. It's really a shame as the CMOS batteries in these are a ROYAL PAIN to replace, I really wish minisforum had gone with a more traditional socketed CMOS battery design. I'm not sure if they where bad from the beginning or if there is some offline drain of them going on but since I have not had any fail after replacing the OEM battery in the two that had issues I'm leaning twords the bad from the beginning direction.
After the second one failed I got these so I had some on hand in case more failed (which of course means I've had mo more failures)
https://www.amazon.com/dp/B09F38WVWH?th=1
Note: the wires on these are shorter than the original ones meaning you'll want to find a place to stick them.
