When I run BurnInTest in Windows 7 on C7Q67, COM port loopback test will fail if I run COM1-COM4 together. There will always be an error on either COM3 or COM4 port. My BIOS is the latest one v1.10 already, do you have fix for it?
Please contact technical support and request BIOS released after 3/5/2012, which has workaround for the problem.