Looping on Error 15 – X10SL7-F
Apparently ECC memory error and related to X10DRL-I but reseating RAM made it go further and get stuck on 55.
https://www.supermicro.com/support/faqs/faq.cfm?faq=26418
Stuck on 55
This was 15 progressing to 55
This happened after looking on error 15, and here is their explanation:
Post error code 55 is meaning “no memory installation”. You will need to ensure UDIMM ECC memory installed properly in blue slot in X10SL7-F board.
https://www.supermicro.com/support/faqs/faq.cfm?faq=17798
Note: Errors 15 and 55 went away after changing the RAM chips in two out of the four slots. This server was working a day earlier so this is very peculiar.