Hi, i would like to know other user nvidia driver version for this laptop? I have installed windows 10 on my i5 version of 7447, after i installed the driver which i obtained from dell website, Blue screen keep popping up.

i see, can i know what version of nvidia driver did you use? Did you get it from dell website?
The funny thing is, i can use the laptop with no issue when i disable the gtx 820m card or uninstall the driver for that card.

Oh you can't even log in ur windows. Ouch! force wipe all you data, it must've hurt if you didnt have any backup .

My case a lil different. I can still log into windows but random bluescreen will popup, then it'll restart all over again. I let it keep restarting for awhile(more then 15 minutes) until it stable for abit, then i enter device manager and disable the gtx 840 gpu.
Now everything works fine except the gpu and new found issue, webcam not detected. Makes me regret upgrading to windows 10.

If you dun mind, can you check the version of your nvidia driver in "Add or remove program", Nvidia driver 3xx.xx <-------------------

Yes with two finger scrolling and zooming...

Yes, it comes with backlit keyboard.

Cool... Bro, im just wondering... What windows version are you using? And what nvidia graphic driver are you using?

I manage to play dota 2 on dell 7447 but i have to disable the nvidia gtx 850m ... Can only play it on low graphic settings with intel gpu.

Wow, good for you bro.... If you dont mind, what is your nvidia driver version bro?