Intel HD Graphics wrongly recognized

Question

I have an HP G62-a13SE Notebook PC, with Intel i3 processor and inbuilt graphics

I recently upgraded my Ubuntu distro from 10.04 to 12.04LTS.
I have a dual boot and on a normal start blank screen appears, and the only way to start it was on recovery mode with disabled graphics,
on a little bit of tweaking in recovery mode I came to know that my Graphics Driver is detected as Intel Iron Lake Mobile Graphics instead of Intel HD Graphics, which may cause a blank screen to appear at startup.
I've already checked my default resolution by using vbeinfo at grub console which stated correct info about my resolution so the only cause I can think of is the faulty detection of my graphics driver.

So, is there any way to manually configure my graphics driver.

P.S. : Ubuntu is fully updated