How to enable Optimus or enable the integrated graphics?

I have a MSI GT685 laptop with i5-2430m and 580m graphics, 580m drains my battery really fast even with very low clock speed (about 3 hours). I also use this machine in class, so I need a longer battery life...

I didn't see optimus option in Nvidia panel, and in windows device manager, I can't find the integrated graphic card there either. I tried to install the HD2000/3000 drivers and the package told me no physical devices detected... I reboot the machine and checked the BIOS, no luck, didn't find any option for enabling the integrated graphics... However, I think i5-2430m do have an integrated graphic card, am I right?

So here's the question, can I enable the Optimus myself? Or, can I make changes to BIOS to make the device manager recognize the integrated graphic card?

PS: Does Nvdia Optimus have some physical requirements on the Motherboard, or is that some kind of software thing or BIOS thing I can modify myself?

 

hi
i know nothing about msi but if youve got the nvidia 580 then i cant see optimus mentioned anywhere so its most probably not got it > MSI GT685 - Notebookcheck.net External Reviews

 

Thank you for your reply, does that mean Nvdia Optimus have some physical requirements on the Motherboard, or is that a software or BIOS thing I can modify myself?

 

its the way that things are wired in there that determines if it has optimus, aside the nasty drivers that come with it

 

THank you very much for your reply

 

as far as i know optimus graphics cards are soldered to the motherboard and cant be changed. it is meant to be auto switching so when you are brousing its using optimus for longer battery life and then when you do something more demanding it switches to dedicated graphics.
you have a dedicated graphics card which as far as i can tell hasnt got optimus

 

Thanks a lot.. Guess I'll just give up n review the midterms..

 

For Optimus to be enabled, the screen must be attached to the processor graphics, and the whole configuration must be supported by BIOS (including enabling the processor graphics in the first place). I think your MSI doesn't qualify even for the first condition.

 

Thanks a lot!