1. From this Forum: If you can get a program like PartitionMagic or Partition Manager 7. These apps can create recovery disks and typically one of the neat features is "unhide" a partition. Do this and you could grab every off. 1: The two are, apparantly, totally incompatible. You can not boot from a UEFI BIOS onto an older MBR boot hard drive, USB stick, or CD/DVD drive, although Windows will read and write both MBR and GPT disks as data. 2: UEFI has many 'features' the old MBR BIOS doesn't like 'secure boot', support for large hard disks over 2 gigs (up to 128 Step 1. Power off your Acer laptop. Step 2. Restart your Acer laptop and press Alt key and F10 key when you see the Acer logo. Step 3. Click on Restore and then choose an option from Completely Restore System to Factory Defaults, Restore Operating System and Retain User Data, or Reinstall Drivers or Applications. Step 4. Power on the computer and continuously press " Alt + F10 " when its logo shows up until it response to your pressing. Then, it will turn into Acer PC recovery environment and eRecovery Management will pop up automatically. This is the start of Acer boot recovery. 2. In its main interface, on the left side, choose " Restore ". Step 1. Press Alt + F10. Press the Power key for 5 seconds to power off Acer computer completely. Then restart the computer and press Alt + F10 when its logo shows up. Step 2. Reset your PC. Select Troubleshoot > Reset your PC to initiate the process. Note that by resetting a PC, all the data you created will be deleted after the restoration. Model: Acer Aspire S7-391; 256GB SSD/4GB RAM; OS: Windows 10 Before going dead, the laptop used to randomly display 'no bootable device found' warning while turning it on. But usually it booted up Acer Aspire s7-391 BIOS recovery. Ask Question Asked 7 years, 9 months ago. Modified 3 years, 2 months ago. Viewed 6k times emhIt.

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