Fixes:

Known Issues
Known Issues in Build 5415:
- World in Conflict game: Part of the terrain is rendered as multicolored tetrahedrons

Issues Resolved
Issues Resolved in Build 5415:
- Display corruption no longer seen after changing the display resolution.
- Computer no longer hangs after closing lid and docking system and display has turned off.
- Resolved issue where the brightness level was not as expected after resuming the laptop from Hibernate state.
- With two external monitors in Clone mode, resolved issue where a monitor may be detected but not displayed after waking the computer from Sleep state.
- Need for Speed game: STOP error code 0xEA is no longer seen during gameplay.
- Sound is no longer lost after waking the computer from Sleep state.
- Resolved issue where the computer may hang after resuming from Hibernate state.
- Resolved issue where the laptop’s display may become blank after rotation.

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Note: Try to set a system restore point before installing a device driver. It will help you restore system if installed driver not complete.