SATELLITE M840-A754 - Toshiba Satellite M45-S165 Notebook

unlikely that it would have
go google and type in--- user manual for samsung phone model m840--- and if there is a user manual it will be in pdf version for download

Update the Toshiba Drivers for the DVD device in question.

disable non essential apps from the system tray and from startup.

Have you tried another program to open the webcam? Is it enabled? " webcam suddenly disappears, when you were doing what?

Press the function key with the image(mouse/no mouse).For M840 its [ F5 ].
Try [ F5 ] or [ FN ]+[ F5 ]. For other pcs it maybe [ F9 ] .

go to manufacture website download for free

what CPU are you using AMD or Intel

go to the elitegroup site .. see if this helps you with network driver requirement

http://www.ecs.com.tw/ECSWebSite/ECSSearch.aspx?menuid=0&lanid=9&keyword=NFORCE4-A754

pleaas esne dpositive feedback , if this helps

you are in a bit of a situation there it seems the lbp-800 is not compatible with windows 7, and canon have not released drivers for either vista/windows 7

more reading:

http://social.answers.microsoft.com/Forums/en-US/w7hardware/thread/2554a0f0-a754-48de-889c-90efb562acf1