Many (but not all) after market fans have significantly different resistance and thus load current from Dell stock fan. No matter how you shuffle these fans around, Dell bios rpm read back falls outside what it considers normal limits hence the start up error.  In some older Alienware models based on user anecdotal reports some fans are close enough to Dell stock fan that they do not trigger error.  But this is done by trial and error.  Dell bios update would not help you fix this problem either.  Basically Dell bios is fastidious and unforgiving to most non-Dell fans.

One user reported “Aurora R11 BIOS doesn't like the low-RPM fan that came with the Corsair H60. You might want to replace that fan with Corsair ML120 Pro.

I have an Aurora R11 with the ML120 Pro as the CPU liquid cooler radiator fan, and BIOS does not give any errors when booting.”