Purchase computer 3 yrs ago with Vista. Turn on computer today and black screen with This copy is not geniune in bottom right corner. Need confirmation ID but no one at Acer or Microsoft will help me...
1. a computer-virus is displaying that message.
2. Windows itself has messed-up, i.e., _falsely_ issuing the message, for no good reason;
3. somebody installed a "bootleg" copy of Vista.
Look on the bottom of the laptop.
Is there a genuine Microsoft sticker, indicating that the computer was shipped with Vista (or XP???) pre-installed? Is there a 25-character product-key?
If you have the original "System Restore" set of CD-ROMs that were factory-shipped with the computer, then backup your data (to an external disk-drive), and reinstall Windows, using that product-key on the sticker.
If you don't have those CD-ROMs, ACER will courier-ship you a replacement set ($20 plus shipping).
So, in brief, backup/reinstall/restore.