(Fix) Fixed an issue where switching failed from High Performance to Energy Savings graphics after undocking or disconnecting the AC adapter while the lid was closed. (Fix) Fixed an issue where the LCD had blank screen or the "Display driver stopped responding" error message appeared after resuming normal operation from hibernation state if the Integrated Graphics mode was set in the BIOS Setup. (Fix) Fixed an issue where the computer shut down automatically after resuming normal operation from sleep state if the following conditions were met. The Integrated Graphics mode was set in the BIOS Setup. The video was output to the DisplayPort monitor with the 2560x1600 screen resolution.