Hi, im currently using nvidia Geforce 105M on a HP notebook.Before the problem,when i right click on the desktop screen,it shows me the graphic CARD im using.After i updated my pc(*not my graphic card) my graphic card was not there.(as in i cant find it.).so i looked it up,i went to devices and printers,clicked on my system,checked on my nivdia geforce 105M and it said:
   
This device is not working properly because Windows cannot load the drivers required for this device. (CODE 31)

so i troubleshoot,to fix that issue.after all that,it says its fixed.but when i right clicked on my desktop again,it does not show up.it showed:intel graphic accelerator or something like that.(instead of my nvidia)

so i rebooted my com,went to devices and printers,and AGAIN it said:

 This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)
i did this a few times.

Sooo can anyone out there help me please?What do you mean you "updated your PC"?by updated i mean.....ok, theres a program called HP support assistant.it updates the programs that are 'outdated' so to speak.it updated my nvidia geforce 105m.halfway through updating, my screen went blank and when i reboot,the problem arose.You should not have rebooted manually while the screen was blank - AND NEVER USE A THIRD PARTY PROGRAM TO UPDATE DRIVERS. In fact, never update a DRIVER unless you absolutely need to.

Go to the website of your video card manufacturer, download the latest driver, and install it. Post back and let us know what happens after you do that.I already tried that mate .after i did that,it said could not locate drivers compatible with ur hardware.when i bought my pc,it is already bundled up with the graphic driver so how can it say uncompatiblei tried troubleshooting again,when it installed the driver,the screen went black.so i restarted and it says the device is working properly.but when i trned off and on again,same thing happenedHave you tried rolling back the driver in device manager? And have you tried system restore (to a point before the problem arose)?the roll back option is grayed.i tried system rstore...but it said turn off antivirus.i turned it off,restored again,and it still said turn off antivirus.in using norton btw.i dont think i turned it off though...i disabled it.do you know how to turn it off?You should be able to just right-click on the icon in the system tray and choose "exit".Have tried drivers from HP exactly fór your notebook? That USUALLY helps.You know I'm sorry - I just realized it's a notebook. The above post is absolutely correct - you must get the driver specific to your system from HP's website.its an entertainment notebook.the graphics card is in built.Anyway,i resolved my problem!! thanks for your time and help guys!Delighted to hear. What did you end up doing?i uninstalled anti virus,did a system restore,and poof!all is well.hahhahaha thanks againGood for you. Glad it's all sorted out. Now for the future PLEASE do yourself a favor and start using disc imaging software on a REGULAR basis.