How to update bios :

1. Unzip the BIOS file that download from BenQ support website to your hard disk. For example, unzip this BIOS file in your local hard disk folder like C:\TEMP\. There will be 3 files in bios zip file, include of flashit.exe and Bios Rom file (ex: R103.ROM), flash.bat

2. Prepare one 1.44MB bootable floppy disk or bootable 98 CD disk that DOSEN”T Includes of himem.sys and emm386.exe.

3. Using this 1.44MB bootable floppy disk or 98 CD disk to boot system in DOS mode.

4. Then go to the BIOS file folder that you design (like C:\TEMP\).

5. Please enter the command "flash.bat”, then press “Enter” key. After BIOS finish upgrade procedure, system will power off automatically.

6. Please press power button to “power on” system, then press F2 to enter BIOS menu, Select “Default Settings” in “Exit Option” and then press Enter button to load BIOS default setting.

7. Select “Save and Exit” to save BIOS setting and then exit. How to confirm BIOS version: 1)Power on machine. While BenQ logo appears, press "F2" to enter BIOS menu. Please check "System" window, there is BIOS Version showed here. 2)Or you can check Bios version in Windows, please open "Accessories"-->"System Tool"-->"System Information"-->"You can check Bios version in BIOS version/date field.

Fix problem:

 1. Fix can not recover system by RCD1.