As Angus said, it is your graphics card that lets you down. I think that it is an onboard chipset and it scores very low on the 3DMark bench test, (1160 when the minimum needs to be 6000 for SSE), I'm not even sure it would run SS2008.
I can't recommend any graphics cards because I don't know what slots you have on your motherboard. In your DXdiag it should give the details of the system but on yours it doesn't. This is all it shows.
System Manufacturer: System manufacturer
System Model: System Product Name
This is the type of information it should show.
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: X58-USB3
Sorry that I can't be of more help.
Regards, Dave