Motherboard

I recently had three systems lockup(weeks apart from each other), once rebooted harddrive light remained on but no activity, and the cmos did not boot. The first system did this and i tried everthing from memory switch to cmos battery, nothing, power would come on but motherboard would not initialize. This happend on three systems, one harddrive corrupt, one hardrive loss partitions, third zero errors(this is after i replaced HD’s in new system. The first system is now running again(dont know why)they are all same motherboards GMB-P57IPS-V0, i replaced cmos battery but cant get the other two to boot into cmos. virus?