Make sure the hardware is proberly installed, (especially the memory) !!
1) The MB Bios to the latest (here 3.0b0a)
2) The ASR-2015S Firmware to the latest (here 1.62)
3) The ASR-2015S Bios
4) The ASR-2015S NVRAM
5) The SMOR version (here 79.112)
If you have any versions earlier than this, than you are on your own
See the ASR-2015S Q & A points before proceeding any further (link will be posted) !!
Save yourself a lot of time and ...
>> Continue only once this is done !! <<
You may want to check my personal notes and experiences on the Tyan S2882UG3NR motherboard
I hope that you find this info usefull. Installating and updating the FW, Bios , Smor, NVram is annoying but required for a successfull first time installation.