Acer aspire one laptop - No bootable device

[dant124c]

Hi. So I have an Acer Aspire one 725 laptop. I took out the hard drive and put it in my desktop computer, and wiped it clean and installed Windows 7 on it ( had win10 before). Then I put it back in the laptop and now it says 'No bootable device- Please restart' or something like that.

Is the laptop compatible with windows 7? It's from 2012 so I presumed it would be.

And is there anything I can do to fix this?

 

[jojesa]

Windows 7 will work but you have to enter the BIOS and change Boot mode from UEFI to Legacy BIOS.
You should have done that before installing Windows 7.

 

[dant124c]

Thanks, but I can't seem to get into the BIOS. I've tried pressing lots of different buttons, including F2, F11, F12 etc. but can't seem to get into it.

 

[jojesa]

Power on the laptop and immediately start pressing the F2 key until you enter the BIOS.
On the Main tab, make sure the F12 Boot Menu is Enabled.

 

[dant124c]

Unfortunately it still didn't work for me, after trying a few times.