I have been using ASUS M2A-VM board based on ATI's 690G chipset for a while. Now I have various HD problems, high CPU load, aspect ratio problems with CoreAVC, etc. I tried to replace it with a 780G based board (probably Gigabyte or MSI) but the system even won't start up. Since a 100% fresh installation means a lot of work, can anyone help me get the AMD 690G working again.