well most am3 boards minimum support 95watt cpus and being the 1045t being 95watt not a socket or cpu compatibility.
Go into ur bios and set the settings for default, possibly it did something that all cores only run at 800mhz. either reset to default pull cmos battery, or manually set the clock speed to 2.7ghz.
Checked that board supports 95watt cpus, but only the x4s are listed under cpu support. i dont see why a x6 wouldnt be compatible, maybe they dont update their site, i mean they only have one bios update for it lol