Update the bios don't help. The BIOS selects candidate boot devices using information collected by POST (Power-on self-test), and your MB only support 2GB RAM. So you can see the 4GB RAM in the BIOS, but it don't mean the PC can boot, that why you get the message "a software or hardware change and wants to try to fix it".
OK now I understand. Thank you.
Staples has an Acer 8 gig/750 gig core i3 touch screen/win 8 for $699. Maybe that's next.