As RolandJS suggested try an offline approach. Puppy linux is good for this. Burn the Puppy iso to a CD. Boot Puppy and when at the Puppy Desktop attach your USB adapter. You should see a USB icon appear next to your optical drive. Click once on it the drive should mount. A File Manager will open. Size and drag the Window until it fits half of your screen.
In the lower left will be your hard drive partitions labeled sda1...sda2...sdaX depending on how many partitions are on the hard drive. sda2 should be your Windows partition. Click once on it and another File Manager Window will open. If you do not see the Windows partition close out the window and select another sdaX partition until you see your files. Resize and drag until you have both File Manager Windows open. Highlight the files you want copied by left clicking and holding the Ctrl key. You can also left click/drag a window around the files/folders you want copied. Drag the highlighted files from the USB to your internal drive. A small dialog window will open. Check the quick button and click Copy, not Move.
I recommend Tahrpup tahr64-6.0.5.iso