Well, you cannot change the graphics (4400) as it is integrated with the CPU.
If your PC is a desktop, you may be able to add a graphics card that is nvidia or amd-based. Most of these cards are able to do what you want, but you should still check for the photoshop support.
And, make sure you pay attention to "compatibility". Not all are necessarily compatible or backward compatible.
If your PC is a laptop, the best thing you can do is to replace it.