Hi guys, trying out a new build for my computer using a ddr3 memory stick which consequently went on to fry three of my motherboards that I tested it on. The motherboards are all of different branding and processors but were compatible with this memory stick. They all will boots but does not post and the screen remains black. All three computers will turn on and off on its own in a endless cycle. Are the CPUs salvageable if my motherboard is shorted? There are no visible burn marks on my motherboard or darkened areas