Changing settings in the unlocked Advanced tab (like VRAM allocation or UEFI boot flags) can brick your laptop if done incorrectly.

You cannot simply drop an i5-3210M into this laptop. The BIOS will boot once, then lock the motherboard permanently (Error Code: 0x0000009F).

Looking for a concise, focused post about the BIOS on the Acer Aspire 5749? Here’s a short, clear draft you can use on a forum, blog, or marketplace listing.