I had Buy a Intel MotherBoard DH67BL with Intel i5 2310 Processor on 05 Nov 2011 but after few days i am facing the problem with Motherboard and system freeze at startup.
Your level of clairvoyance astounds me ... but seriously, have you been able to get it to boot by using safe mode?
You can get into safe mode by pressing and holding the F8 key as your computer restarts. You need to press F8 before the Windows logo appears.
I had trayied all Things but system hangs even on Bios Screen. When system starts and before booting the system it hangs .
I had trayied removing all connections but still it still hangs on Bios. after all i think problem is with Mother Board and submited the Board to Intel Service Center for Replacement.