How to recognize VGA card (TB250-TBC / TB250-BTC+/ TB250-BTC Pro)

• 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.