Biostar

• Hardware 
  Ensure hardware connect properly first.
  (1). Check VGA card 
  Try to only plug one VGA card in PEX16_1 (long yellow slot) directly without riser card => Check whether display
  
  (2). Check Riser card 
  Try to plug VGA card with only one riser card to test per PEX1 and PEX16_1 => Check whether display.
  
  (3). Check CPU socket Pin
  Remove CPU and check CPU Socket pin whether bent.(If bent , might be no power on or no display.
  
  (4). Check Riser Card and VGA card power are connected properly.
  
  (5). Refer Mining Guide to deploy Rig : https://www.biostar.com.tw/app/en/event/crypto_mining/page4_2.htm
  
   
• Under BIOS
  (1). Ensure BIOS up to latest.
  TB250-BTC => B25CFB29.BSS or latest
  TB250-BTC+ => B25EFB29.BSS or latest
  TB250-BTC Pro  => B25DB29.BSS or latest
  After update and get POST , BIOS will detect PCIE and show each slot status automatically.
  
  (2). Plug all VGA card in slot and into BIOS to check whether get (Present)
  PEX1_1-PEX1_11 => Chipset Menu /PCH-IO Configuration / PCI Express Configuration.
  PEX16_1 => Chipset Menu / System Agent(SA) Configuration
  
  (3). Check BIOS setting. (Or use BIOS default setting)
  Enable Mining mode (Chipset / Mining Mode)
  Enable Above 4G Decoding (Chipset / System Agent (SA) Configuration / Above 4G MMIO BIOS Assignment)
  Disable CSM Support (Boot / CSM support )
  =>Disable CSM support option , it will only recognize UEFI device.
   
• Under Windows
  ***Please make sure BIOS get all VGA card first.***
  (1). Check OS be installed by UEFI format (How to check install by UEFI)
  
  (2). Check Device Manager do not show yellow exclamation mark.
  
  (3). Check VGA card driver up to date.

• Under Windows : 
  Each brand of VGA card support up to 8.(VGA card driver limitation)
  So,you could deploy AMD*8+Nvidia*4 or AMD*4+Nvidia*8 or AMD*6+Nvidia*6 ...etc
  
  ***UPDATE***According AMD relaese VGA card driver ReLive Edition 17.11.1  , It can support up to 12 VGA card.(as picture)
  AMD Website : https://support.amd.com/en-us/download
  
  How to set up mining Rig:
  https://www.biostar.com.tw/app/en/event/crypto_mining/page4_2.htm
  
  
  
   

• Under EthOS :
  Only support one brand VGA card to use at same time.
  Example : 9 Gigabyte AORUS GeForce GTX 1060 6G have to use EthOS.
  If AMD card , Enable CSM support option.(Path : BIOS/Boot Menu/CSM Support => Enable)
  Easy 5 Steps to Install ethOS USB on TB250-BTC PRO 
  https://www.biostar.com.tw/app/en/event/crypto_mining/page7.htm
  
• Note: We couldn't guarantee that overclock VGA card will be work stable and smoothly.

Please update ethOS to the latest version (1.2.3 or above) and enable CSM support in BIOS for multiple AMD GPU mining.

note: update BIOS to the latest version according to your motherboard model. mining mode is set to enabled as default. Nvidia GPU does not need to enable CSM support.

For mining purpose in  BIOS version (7/10) and later version of BIOS, default setting for CSM is set to disabled. In which video is set to UEFI mode. If your GPU does not support UEFI then display through GPU is not supported. Please disconnect all GPU and connect monitor to on-board DVI port, then set on-board display as primary display device in BIOS. Then you can connect GPU back to motherboard and display through on-board DVI at the same time.

1. Power off and unplug all VGA card.
2. Connect moniter display with onboard DVI.
3. Power on and press "DEL" into BIOS set primary display from onboard.(BIOS/Chipset/System Agest(SA) Configuration/Primary display => IGFX).
   Then press "F10" save & exit.
4. Power off again and plug back all VGA card and power on to check whether get all VGA cards.
   PEX1_1-PEX1_5 => Chipset Menu / PCI Express Configuration.
   PEX16_1 => Chipset Menu / System Agent(SA) Configuration
5. If not get all , please check riser card whether work properly.  

If  AMD VGA card overclock and after install driver still show Yellow exclamation mark in Device Manager , here has a method might be fixed issue.

1.  Enter into Windows OS, and install graphic cards driver.
2. After installed driver finished,restart system and check :
   My Computer > Device Manager > To check the graphic cards if all can be recognized OK. 
   ==> If graphics cards show Yellow exclamation mark, it needs install Patch file
3. Run Patch file as Administrator then install.  After install done,please restart system and enter into Windows OS, and check all graphic cards can be recognized well with No Yellow exclamation mark . 
   
4. If check no problem,customer can start to mining.

Patch file download link : https://download.biostar.com.tw/temp/FAE/AMD_GraphicCard_Patch.rar

If you are using a KabyLake CPU and want to output audio through HDMI® port, please update On-Board VGA driver to KabyLake version. You can find download link in download page of your motherboard model.

1. If your Motherboard is included in following list you can follow the instruction to restore BIOS. (Z270GT9, Z270GT8, Z270GT6, Z270GT4, B250GT5, B250GT3, Z170GT7, H170GT3, B150ET3, B150GT3, B150GT5, )
2. Remove power cord from your PSU

3. Switch to the backup BIOS ROM using onboard BIOS switch


4. Reconnect power cord and boot up with backup BIOS ROM

How to restore a damaged BIOS ROM
1. Download the BIOS file from www.biostar.com.tw for the proper motherboard model.
2. Copy the BIOS file to a USB pen.
3. Power on motherboard with the undamaged BIOS ROM and press [F12] key during POST screen.
4. After POST screen, BIOS-FLASHER utility will pop out.
5. Switch to the damaged BIOS ROM using onboard BIOS switch.
6. Choose [fs0] to search for BIOS file.

7. Choose BIOS file from the USB flash (pen) drive, then press [Y] key to start BIOS update.

8. Press [Y] key to restart system after BIOS flash complete.

9. Finished.
10. If the above can not resolve your problem please contact with our service center for further help thank you.

Please follow below instruction:

1.Update your Realtek High definition Audio driver to the latest version

B75MU3B does not have on-board VGA driver for Windows 10 OS.