Welcome to the EVGA forums
 
Please post your -detailed- CPU specs (exact model and speed) and system RAM (total amount and speed) 

I am unclear, you appear to have only just one 750m? do not see how you can "SLI"....
Are you attempting to use the Lucid Virtu software for your iGPU? is that what you mean?
 
Laptops are ill suited for a game like BF4 and you will have to except your performance envelope.
A 750m is quite underpowered for 1080p
 
The VERY first thing you should do, is shut down MSI afterburner and UNINSTALL it
*during the uninstall make SURE you answer -NO- when asked to save data....
Once complete, reboot the system once (do NOT skip this reboot)
 
The issue here is laptop software that injects itself into your Nvidia driver for fan and temp control
That laptop onboard software does NOT play well with Afterburner -or- newer Nvidia driversets -period-
 
After removing Afterburner and rebooting once...
Do a CUSTOM mode install of 337.50 (do NOT use express or the GeForce experience, do it manually)
UNCHECK -all- Nvidia driver components EXCEPT for Graphics driver and PhysX
Make -sure- you put a check in "perform a clean install"
After the driver is finished, you must reboot once (do NOT skip this reboot)
 
Leave all NVCP settings at defaults
use only the HIGH preset in BF4 and make SURE--> you have scaling at 100 and FOV at 70
now test
----------------------
 
If you really have been using Virtu logic for your iGPU, forget it as it will cause issues in BF4 due to the way system RAM works....
You should disable it in BIOS if possible, or uncheck the Intel common user interface entries in your MSCONG "startup" tab and reboot
Make SURE you read your manual, as laptops are custom configured and user changes -cannot- be taken for granted
 
You post about your system ram is very unclear
Do you have (2) 8 gig sticks and one has failed? has it been removed from the system?
If not, then just what configuration of ram are you currently running?
 
 
 
 
 
 
 

I did some reading up on your laptop.
It uses a very proprietary setup with unusual "SLI" properties.. 
Its highly doubtful you can get stable SLI performance using regular Nvidia drivers.
You would need a custom set, those will be on your Laptops webpage and are likely completely outdated. 
 
As for overclocking, to do so on a laptop (and one with a cartridge GPU addon) is most unwise due to not only the hardware issues, but also because of the -serious- software issues involved...
 
Sorry your having problems with BF4

Well thanks for looking into it for me, it's my first gaming laptop so I pretty much just looked for the best laptop I could find according to reviews and such that was in my price range. If I would've known how proprietary the setup was I would've never bought it, I had to flash a custom Lenovo BIOS just to get sli to work with Windows 8.1. Either way I see there's a driver released for it on the Lenovo site from December so I'll give that a try and if not maybe some later driver update will fix it. It just sucks since I bought the second card to coincide with the release bf4 and it's the only game that wont work right with it other than Dark Souls, which is such a terrible PC port it's not even funny. At least even with just one card BF4 still looks better on my laptop than on my friends xbox one