Ok so since taking it back to the store isn't an option, let's talk about what you have to work with:
The mobo is an A55 chipset, which is the lowest quality of the 3 tiers of FM2 (A55, A75, A85). It doesn't have a lot of features, but you CAN add a discreet GPU (provided your PSU can handle it).
The A10 is a high tier Richland APU, though it is locked so you cannot overclock it. It does support some fast RAM speeds though. This APU has a good integrated graphics (almost as good as it gets) and also 4 piledriver CPU cores (which are meh, ok).
There's a couple ways to squeeze out some more performance.
1) Crossfire/dual graphics is probably a no go. AMD has still not perfected the drivers to really get this working properly and this will just cause more pain than is necessary.
2) Tweak 3d driver settings in AMD Catalyst Control Center. This is an easy way to increase performance by making detail compromises.
3) See if your RAM will run faster. It might not. To change this you will need to go in your BIOS and see if if it as an option. If it fails to run faster, it could cause the computer to not to boot up, requiring a CMOS CLEAR (don't panic it's easy). Anyways if you can get it to run faster it will increase the bandwidth for your APU graphics and help a lot!
4) You could purchase a discreet graphics card. BUT...we need to know some things about your PSU first.