I have an Acer laptop that had 7 Home Premium x64 pre-installed. I got a nasty virus, so decided to restore my PC from it's hidden recovery partition(press F9 during bootup), and the partition was corrupted, so I had a bricked PC. I borrowed a retail Windows 7 Home Premium upgrade from a friend, used the product key on the sticker, and it did not work, so it went into "non genuine" mode. Acer is asking $20 for recovery media. Is this my only option?