To access the BIOS, hit the
Hidden Partition: D2D Recovery Software
Some Acer systems use a hidden partition to allow the recovery of Windows. To see whether you system has the D2D feature you will need to get in to the BIOS and look for an entry, if it is there ensure it is enabled.
To use the D2D system power on the machine, press and hold down Alt and tap F10. Then follow the on screen dialogue.