After updating to P1.90 or later version BIOS, please refer following notes.

1. If your CD is IVD12/ IVD12b, please go to directory to get audio driver. Please find the "Setup.exe" file in Support CD/ Drivers/ Audio/ REALTEK/ MCE_XP_2K (R1.36) or MCE_XP_2K (R1.41) folder, and then execute the "Setup.exe" file directly.
2. The yellow exclamation mark in Device Manager is unnecessary. It will not affect the system at all. Please follow below steps to remove it.
   1. Right-click "My Computer" on your desktop, and click "Properties".
   2. Select "Hardware", and click "Device Manager".
   3. In "Device Manager", double-click the option "System Devices". You will find "VIA Standard PCI to PCIE Bridge" item with a yellow exclamation mark.
      
   4. Right-click "VIA Standard PCI to PCIE Bridge", and select "Uninstall". Confirm your choice by clicking "OK".
      
   5. After a few seconds, click "Scan for hardware changes" icon on the top.