If you do have another drive that can boot Windows 7, you can use the Disk Management tool to build a new system partition on your existing SATA drive. You have to shrink the existing partition, and create a new partition. Then you can copy the boot files to the new partition using bcdboot.
An APU is an auxiliary power unit. On-board APUs are small jet turboshaft engines that are started to provide electrical and hydraulic power to the aircraft when needed during periods when the engines aren't running. Some aircraft are designed...
APU A6-6310 Quad-Core is a middle-class processor based on the 28nm, Beema microarchitecture. It offers 4 Cores initially clocked at 1.8 GHz that go up to 2.4GHz, in Turbo Mode and has a power consumption of up to 15 Watt.