Thank you for your SPECS and the details of the symptoms.
I quickly reviewed the
FOXCONN A7GM-S Board ( it's not
Funncon
) at Newegg.com - Foxconn A7GM-S AM2+/AM2 AMD 780G HDMI Micro ATX AMD Motherboard - AMD Motherboards It is a good board and should support Win 7 X64. I am guessing that you are installing this
Win Bit 64 Build 7100 RC with another
system like
Windows Vista or
Windows XP already installed on a different partition and
running well without any major issues. If that is the case I would further assume you might have several USB peripherals on the system configured to work in the existing OS. If that assumption is correct, I suspect one or more of the
USB devices attached to the MoBo or external USB ports might be
interfering with the setup.
My suggestion based entirely on all those assumptions is to
disconnect all of the USB devices including any USB Printers, Scanners, WeCam, Hubs, External HDDs and any Memory Card Readers installed in the case with USB connectors on to the MoBo, etc and then try
Reinstall Win 7 again. I will be interested to follow your progress.
Thank you and Good luck .