|"Intel i3 4400 Quad Core 3GHz (processor and graphics card)"|
Your all-in-one PC doesn't have a graphics card. As you posted above, the graphics & the processor are together. Also, there are no i3 quads so you most likely have i3-4150T dual core. You might be able to swap the CPU for one with a better graphics chip, but you'd have to find out which CPUs would be compatible with your motherboard & then figure out if it would be cost effective.
message edited by riider