Intel HD400 graphics? AFAIK there is no way that is enough for the minimum requirements, which is an 8800GT. You are several steps below that with the Intel onboard graphics as you can see HERE
Sorry but if you want to run BF4 you will need to buy a desktop machine that has very good graphic support.
Your best (i.e. cheapest) bet would be to sell your copy of BF4 to a friend for as much as you can get and then buy a console and console version of the game.