11-18-2011 06:13 AM - last edited on 04-18-2016 03:41 PM by OscarFuentes
Check if you are experiencing the same issue in the BIOS and on external monitor.
The idea is to find out the root cause... whether the issue is with graphics card/driver/display.
Also, plz check the link might be helpful for you......
- Troubleshooting display brightness (Windows8, Windows7 and Widnows Vista)
- HP PCs - Sleep and Hibernate Issues (Windows 10, 8)
- HP PCs - Updating Drivers and Software with Windows Update (Windows 10, 8)
- HP Notebook PCs - Touch Screen Issues (Windows 8)
- HP Notebook PCs - Green Screen and Other Video Playback Issues (Windows 10)