graphic card

Hi I am using Dell Inspiron 15R 5537 which I bought in march 2014 it came with windows 8 now when ever I am trying to play GTA4 or GTA5 in the middle the screen starts shaking and the controls does not work I contacted the rockstar help line and they said it is due to graphic card problem

Processor:                                           Intel(R) Core (TM) i5-4200U CPU @ 1.60GHz 2.30 GHz

Installed memory(RAM):                     6.00 GB (5.89 GB usable)

System Type:                                      64-bit Operating System,x64-based processor

500GB HDD

pls help me with my problem if I have to increase my graphic card if present what should I do