Lenovo H520S

[AsianZensation]

Hey Bios people :p

I have a Lenovo H520s, which has a CIH61M1 v1.1 motherboard in it . The "lenovo bios" that is really a rebranded AMI bios, which is of course whitelisted for our pleasure :L . I wanted to know if there are hidden features if I flash my bios in anyway like overclocking and little sweet treats. I mostly need the Micro Pcie unlocked and powered on so it can detect the Egpu external Graphics card adapter it does from start up but I need to hot plug it because of link retention soft freezing the setup manager for the egpu and of course its for gaming .  

Any advice would be greatly appreciated!!!

I know I could buy better parts or upgrade but I cant really shove out 1000$ right now I am a Cheapo matic so I gotta use all the resources until no other option hahah

Thanks