Ultra-Thin

[CamiloMM]

As the one who originally asked about this topic, I'm not sure if I understand your problem.

What I could understand is: if your computer runs, don't touch the BIOS. You won't gain anything from changing it.

Or your problem is that you can't "downgrade" to Windows 7? You should be able to do that.

[ufhixitachi]

Here my explain, recently I download 3 of them bios update on Acer support drive, I hope it increase performant of my acer aspire v5-471 but I don't know it downgrade my bios from v2.. To v1 now, so I try another update but it say error 235 - oem ....

[ufhixitachi]

Until now I didn't found any solution

[CamiloMM]

Just to make it clear: BIOS updates are usually released because the older BIOS was not capable of something (like booting from some new device), but upgrading BIOS does not increase performance (drivers are the ones that may increase performance when upgraded). So you never need to upgrade, downgrade or even touch your BIOS unless you have a very specific need to do so (like the new BIOS does something you need).

So, in general, if your computer boots fine, there's usually no need to touch the BIOS. Everything after boot is drivers, OS and applications.

[ufhixitachi]

why i risk for update bios it cause my laptop with higly specification (NVIDIA + Intel Graphics 4000 card) than my other pc with low specification (Intel Graphics 2000) more fast performance when playing game (ex: Civilization 5 Brace New World with high qualty) then now my keyboard is wrong symbol when i'm press (ex: Button 2 symbol are @ now "), here i want ask if driver support on acer site why it not work for specific acer type??