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M17x R3 upgraded to gtx 780m

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recently i upgraded my m17x r3 to nvidia gtx 780m, all went well aside from my audio is not working,i tried all the guides here but im getting white screens, currently i installed nvidia drivers 331.65 which i got from eurocom and modded inf from laptopvideo2go, can any one help me on how to get my audio working back again, thanks...

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m17x r3

intel i7-2760QM

8GB DDR3

previous card - amd radeon 6990m

lcd 60hz

currently installed nvidia gtx 780m with drivers 331.65 from eurocom and modded inf from laptopvideo2go

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- Uninstall IDT drivers (Programs and Features) -> reboot -> F8 Safe mode -> uninstall Nvidia drivers DDU third uninstall option (shutdown/no rescan)

- BIOS settings F2 -> Enable IDT (integrated sound card) -> Enable IGP -> Set display to SG -> save without exit option -> shutdown -> remove 780m (2 screws/Keep the heatsink on).

- Windows -> Install IDT Drivers -> reboot -> test Audio settings.

- BIOS settings -> disable IGP -> set display to PEG -> save without exit option -> shutdown -> reinsert 780M.

- Download GeForce 337.81 Beta Driver

- Extract drivers with 7-Zip/winrar.

- Display.Driver folder, copy/overwrite nvdmi.inf v337.81

- Nvidia 337.81...International folder\ run setup exe

http://forum.techinferno.com/alienware-m17x-aw-17/4829-780m-gtx-m17xr3-integrated-soundcard-working-again-no-more-usb-soundcard.html

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i manage to get my audio working but evrytime i use itunes i get white screens somtimes black screen, any fix on this one? thanks

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another question j95 can i also upgrade to 160hz lcd so i can play 3D games?

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j95 i manage to install the drivers that you gave and itunes is working fine now, thank you :)

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No problem.

another question j95 can i also upgrade to 160hz lcd so i can play 3D games?

Yep, 120Hz monitor (DP or DVI Dual-Link inputs) + 3DVision kit, Mini DisplayPort UltraAV® Mini DisplayPort to DisplayPort 1.2 Cable (backwards compatible to v1.1a) or Mini DisplayPort to DVI Dual-Link Active Adapter - USB Powered.

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