I think im in one big mess here so can any one help i had my acer xc600 on windows 8 when i frist got it over a year ago then i changed it to windows 7 now im going back to windows 8 i have the iso file on usb to do it but when i go to boot from usb i keep getting this error no boot disk has been dectected or the disk as failed so when i go to boot options in the bios my 1st boot device is UEFI: WDC WD5000AAKX-22ERMA0 2nd boot device removable device 3rd boot device cd&dvd 4th boot device lan can any one tell me what im doing wrong because i changed them around to try boot from usb and i still get the same error no boot disk has been selected or the disk failed would be a big thanks if some one could help me
