Stone Computers Knowledgebase

Stone All In One PC M780 / M770 (21.5" and 23.6" display) - Screen brightness problem

Article ID: 268
Last updated: 12 Nov, 2015
Article ID: 268
Last updated: 12 Nov, 2015
Revision: 6
Views: 6408
Posted: 14 Jan, 2014
by Paul Watkins
Updated: 12 Nov, 2015
by Andrew Sharrad

Problem

The brightness of the display panel is low or dim, even when adjusted to the highest setting in Windows or using the switch on the side on the unit.

Cause

The LVDS display settings in system BIOS need adjustment.

Resolution

Enter system BIOS using F2 key after turning the system on and modify the settings as described below.

Navigate to Advanced menu and select 'System Agent Configuration'.

Select 'Graphics Configuration'.

Next select 'LVDS Configuration'.

On this menu page choose 'Mitac Maestro (21.5")' from the 'All-In-One Chassis' drop down box.

Ensure that Mode Select is set to 8bit Mode(Vesa).

Once the above steps have been taken please save the changes and exit the BIOS by pressing 'F10' and choosing 'Yes'.

Tip: You may encounter this issue if you update the BIOS on a Stone system using a non-Stone BIOS, for example, the standard Asus BIOS. To avoid having to make these BIOS settings changes, always perform updates using the Stone BIOS files.

 

Applies to:

  • SYSBRA-223 - Stone M780 AIO 23.6 inch Non Touch
  • SYSBRA-227 - Stone M780 AIO 23.6 inch Touch
  • SYSBRA-237 - Stone M770 AIO 21.5 inch Touch
  • SYSBRA-238 - Stone M770 AIO 21.5 inch Non Touch
  • BOAMOT-470 - Stone / Asus Q87T Thin mITX motherboard
  • BOAMOT-471 - Stone / Asus H81T Thin mITX motherboard
This article was:  
Article ID: 268
Last updated: 12 Nov, 2015
Revision: 6
Views: 6408
Posted: 14 Jan, 2014 by Paul Watkins
Updated: 12 Nov, 2015 by Andrew Sharrad