Problem I'm currently having: the email computer in my harem) has died. Tried a different power supply, no change. mobo is MSI 990fxa-gd80 v2..2, WITH fx9370 cpu and 16GgB memory. Worked fine for 2 years. Disconnected all hard drives, no change. Root LED/switch on mobo comes on, but is ineffective. Liquid cooled with H110i Corsair. Stumped now. Will not boot from hard drive, ssd, CDROM, or anything. Press the mobo boot button, no response.