It's unusual to install a BIOS which is the software that makes the system work before a Windows or Linux system which are the software that makes the laptop work completely. What is the problem that causes you to want to do this?
Sorry, doithuong, but not everyone can understand Vietnamese so the rules here that English is the only language that can be used in Tom;s.
Google Translate told me you had only said how a good that Asus laptop but it doesn't help Tommy Crown.
Acer recommends Windows 10 Pro for business use but the domestic version would enough. The specification I just read said "RAM up to 8GB" but if you only have 4GB, I suggest you buy another 4GB stick. Windows 7 is no longer supported by Microsoft. There are many versions of Linux and they're free of charge. I use Mint19 in one of my laptops and it's quite good but daily updates are as annoying as Microsoft's behaviour.