Question x570 Aorus Master - weird boot/bios issue

Yarberger1

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Apr 22, 2015
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Hello all

This morning, after two months of flawless use, my system wouldn't boot to desktop. The motherboard showed a 07 (or D7) code. The DRAM status led was also lit, indicating a memory issue. I removed and reinstalled each stick one at a time, which did nothing.

After more attempts to troubleshoot, I noticed that the BIOS_SW switch was oriented to Backup rather than Main. I moved the switch to Main, powered the system back on and was able to get into BIOS and thereafter to my desktop. (The adjacent SB switch is set to single BIOS).

I haven't powered the system off since, as I am worried that I might not be able to get it running again(!). Any idea what the culprit might be here? Has the backup BIOS failed somehow? I haven't attempted to update it in any way, as I don't feel I have sufficient expertise to play around with BIOS generally. But everything now appears to be working normally, and the DRAM status led is no longer lit.

Any thoughts on this would be appreciated.
 

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