I am surprised that AMD Overdrive was able to install on your Laptop. From what I gathered, no AMD Overclocking software is compatible with laptops.
That is besides the point. In AMD Overdrive can you set your APU to "Default" or "Factory Settings"? If so do that and uninstall. If not, try uninstalling Overdrive and see if you again have control in BIOS over your APU.
Otherwise, I would suggest you contact your Laptop's Support site and open a Support Ticket to see what they say you can do to return your BIOS back to "Factory Settings" or "Default" or get your APU back to the way it was before you overclocked.
If your Laptop is still under Warranty and you contact the Laptop's Manufacturer Support site, it is a good chance they will void your Laptop Warranty. This is just my opinion. But manufacturers will void a Warranty if their hardware has been Overclocked in any way.