Already tried different processors of the same kind (P4 2.8GHz) on my board (Redfox/Biostar U8568 Pro) pero di jud mo boot. mosiga siya pero no response whatsoever. checked my mb's manual, supported P4 core speeds kay up to 2.8GHz. I'm currently using a Celeron 2.0GHz (Northwood core) and gipuli-puli na nako pero wala jud. sa celeron mo on but if sa P4 wa jud response. tabang! na pa ba koy i-set ani sa board? coz i tried this before with a P4 2.5GHz, wa man cyay problem.