Did you confirm the Motherboard on VMware's Hardware Compatability List?
Please check if you using the compatible model of hardware to install esxi .
Also try the steps mentioned in the below thread.
i have the intel mainbord S2600 ip4
i had to upgrade the bios first before i could install the esxi 5.5
is your bios up to date?
s2600wt have only one bios on web...and the same on mainboard.
I just reinstall the bios, but not work.
I have the exact same problem, but I doubt it's a hardware error, as I installed Hyper-V with no issues whatsoever.
I thought the problem was in my RAID module (Intel RMS25KB040), but I added the drivers to ESXi instalation and got the same result...
The problem was memory mapped io in bios.
The intel support suggest me to disable and now all sevrer work.
Thank you all for support
Thanks, it worked for me too!
But still, I couldn't install ESXi 5.5, kept getting error during installation on tools.t00, but it worked with ESXi 5.1, and I'm OK with that...as long as I don't have to work with Hyper - V