Need Help: AMD EPYC 7643 on Gigabyte MZ01-CE1 - No POST, No Beeps

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Sirico

New Member
Aug 21, 2023
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Hello everyone,

I've come across a rather perplexing issue with the AMD EPYC 7643 processor when used on a Gigabyte MZ01-CE1 motherboard. Here's the rundown:

- I am able to access the BMI.
- There are no POST beeps or indications.
- Caps lock and num lock lights don't light up when pressed.
- I have tried 4 different EPYC 7643 CPUs (all the same model).
- I've also tried two different MZ01-CE1 motherboards(rev3).
- All combinations produce the same outcome: no POST, no beeps, no keyboard indicators.

Things I have tried:
- Checked and reseated all connections.
- Verified the power supply is functioning correctly.
- Updated the motherboard's BIOS (using a different compatible CPU for the update).
- Made sure the RAM is compatible and reseated them in different slots.
- Reset the CMOS.

I'm honestly stumped at this point. Given that multiple CPUs and motherboards are behaving the same way, it seems like there might be something else at play here. Maybe a compatibility issue or a setting I might be missing? Has anyone else encountered this issue or can offer some suggestions on what to try next?

Any advice or insights would be greatly appreciated. Thank you in advance for your help!

Many Thanks
Sirico
 
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