I would stay with ASUS, ASrock, Gigabyte, or Biostar for a motherboard, MSI is a problematic company and their quality control sucks. I always hear of MSI motherboards failing or having faults. Also change your PSU to a XFX or Seasonic, here is my recommendation. Honestly you won't be playing any high end games, maybe Sims 3 half way turned up if your lucky.
There is a BIG problem with your build. Your using a single DIMM of slow memory which is going to cripple your APU's performance. Get a 4GB (2x2GB) set of DDR3-1866 memory. A 500W PSU is seriously overkill, you'll never be over 200W of power usage so look for a 300~350W PSU. I'm running a 6800K with 6GB of DDR3-2166, SSD and 7200RPM HDD on a single 300W PSU with zero problems.
See if you can go with an A85X MB, they tend to offer a ton of features for their price.