inputs.text: msi geforce gtx 750 ti major issue - amd phenom ii 820 quad core cpu 500 watt power supply 6 gig ram atx mother board installed card tried boot nothing happened removed card tried boot nothing happened mother board lit fans spun hard drive spun no beeps no boot nothing tiny switch mean tiny almost imperceptible switch legacy mode spent hours searching tiny speck zero documentation save mention existence switch back side card top youll need flashlight excellent eyesight find no markings indicate locationthe computer still doesnt boot may change motherboard andor cpu fix problem