Last night I backed up all required data from my old laptop into qty 2 external hard drives. All info was on them. Tonight I have tried to download them onto my new laptop and they are not detected. I have since found out that I plugged them both into a USB 3.0 connector. Both drives are not detected but the blue light is on. I plugged them into the old laptop which now does not even detect them as connected. Both used to come up as F Drives in my computer but nothing. What is the problem and what can I do to resolve it. I am not brilliant with computers so please treat like a numpty.