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sure its a E3 QS - works on supermicro, currently the most strict vendor in case of stepping support.

check this, mod was done before. but unknown one or two 8272cl https://forums.servethehome.com/index.php?threads/vrm-modify-icc_max-to-run-high-current-tdp-oem-processors.38686/post-387028

no. you have updated two VRM controllers. they are both accessible with P4.

sorry i realy don't know much about OEMs dell or hp... just check whats required if you install 2x 205W CPUs....

yes. because you fashed the wrong signed BIOS, the BMC FW now wants only signed files, the only way is now: pull the BIOS chip out ofthe socket and flash with USB programmer like ch341a or buy one preflashed BIOS chip.

old unsigned BIOS file. once you have flashed a signed file you have keep this. check the BIOS chip size please.

16 or 32mb chip ?

what file did you select....the zip ?

corrupt file, or not a signed BIOS (H11dsu-xxx-STDsp.bin) what file do you use ?

sure

swap CPU1 with the other. if work, something with UPI requirements ? power budget ? PSU upgrade required ? not unusual on OEM servers.

thanks for the picture. imho should not be the problem. 8272CL is only 195W TDP.

thats bad. only 5+1 ( 6+1 full populated ) picture max 1MB. make picture smaller (irfanview) or upload somewhere and post link.

no this is BMC FW chip. there is a SOP8 for BIOS.

sure, dead CPU and/or RAM can cause this. the kbd numlock led any sign of light after some time ?

i meant have you tried only one cpu ? and check if all your VRM power stages(chokes and DrMOS) are populated, dell likes to remove some for better efficiency on lower currents.

better error description ? only one CPU ?

don't know. maybe early BIOS with 2nd gen support can help.

8272CL can also issue some BIOS trouble like 8273CL/6268CL but we have already one R740xd working https://forums.servethehome.com/index.php?threads/vrm-modify-icc_max-to-run-high-current-tdp-oem-processors.38686/post-387028

yes