Notebooks & Netbooks

[petrosd2012]

You can't go to a command prompt if you can't load the OS

PS. I know the various DOS commands. I was using them long before Windows.

I knwo you think you know a lot, but you really don't. I'd appreciate if you go stroke your ego somewhere else. You're just not helping here. Thank you.

[Acer-Cory]

petro,

The UEFI (which is a replacement for the BIOS we've all grown up) has legacy support, and that's what you've said you enabled. The OS won't load in legacy, but you would need to use legacy to boot USB drives, or DVDs, so that is why the option is there. I'm not sure why you can't get back into the BIOS, you should be able to power on from a cold boot, F2 to get into the BIOS. I would suggest F9 to reset defaults and F10 to save and exit. If we can get that far, hopefully getting help for the rest of your issues with the 8.1 update will be easier.

[vaizaren]

you can use cmd just using a bootable OS in a flash drive... even you dont have your precious OS being read by the bios..

it's in advance options -_-

[vaizaren]

try reading this..

cant go cmd without an OS?    
http://www.sevenforums.com/tutorials/139810-sfc-scannow-run-command-prompt-boot.html

[petrosd2012]

---

Acer-Cory wrote:

The UEFI (which is a replacement for the BIOS we've all grown up) has legacy support, and that's what you've said you enabled. The OS won't load in legacy, but you would need to use legacy to boot USB drives, or DVDs, so that is why the option is there. I'm not sure why you can't get back into the BIOS, you should be able to power on from a cold boot, F2 to get into the BIOS. I would suggest F9 to reset defaults and F10 to save and exit. If we can get that far, hopefully getting help for the rest of your issues with the 8.1 update will be easier.

---

I should, but there it is. I can't sumply start the machine and press F2 to go into the BIOS (and change it backto UEFI). No matter how many times I do it, the result is always the same -- "Operating system not found". I've sent hours with Acer Support telling me to power onand press F2 and the results are always the same. It doens't work once the BIOS setting has been changed to Legacy.

I booted with an Acer Recovery Windows 7 DVD. It runs the recovery software but still won't allow me to enter the BIOS via F2.

As I've said, my suspicion is that Acer has configured this laptop so that it wll not go into the BIOS unless the Windows 8.0 is booted, and it will not boot it unless EUFI is chosen. So, when you choose Legacy and restart your laptop is made useless.

[petrosd2012]

I'm issueing a challenge -- especially to Acer Technicians.

On a non-upgraded Windows 8.0 laptop with EUFI, go into the BIOS and change it to Legacy. Shut Down. Power on and press F2 repeatedly. What happens?

Please don't comment unless you've actually done this. Please don't tell me what it should do.

This is for people who actually did it with an actual Acer with an Actual Winsow 8.0 OS, and an Actual UEFI BIOS, and actually change it.

Thanks :-)

[vaizaren]

that is what i did....

the same as you..

to solve this kind of mess..

first, you need to download from acer site the latest bios driver they have for your laptop. 

(use another laptop)

http://us.acer.com/ac/en/US/content/drivers/4252;-;Aspire%20V5-571G (if this is not like yours, you can find it at acer support)

but you must install only one... but dont worry, it will prompt you if the file you are trying to install is not the one needed.. i used the 1.22 version... (it depends on the bios version, the starting number of the version must be the same., mine is from 1.xxx to 1.22, i was prompted that installing the other one is not right, it said that it is incompatible)

then, after you downloaded it, extract it..

make sure you have the it on a flash drive (usb)

second, since you have the disc... use it.. 

http://www.sevenforums.com/tutorials/139810-sfc-scannow-run-command-prompt-boot.html

this shows how to go to command prompt using disc repair (this may be win7 it is practically the same, only gui is different)

 go to repair your computer option where you will find many options..

choose the option open a command prompt..

as your in the X: drive which is the container of the disc., go to the current folder of the file..

X: > F: (if F is the drive letter of the usb, then F, if not, then use the drive letter corresponding to the usb)
go to... the bios folder
F: > cd BIOS_Acer_1.22_A_A/BIOS_Acer_1.22_Windows/Windows

then run the Update.bat

(it requires that your battery must be greater than 30%..)

if then, just execute the Update.bat

F:/BIOS_Acer_1.22_A_A/BIOS_Acer_1.22_Windows/Windows > Update.bat

just wait and voila... it is fixed 

mine is aspire v3 471g

just tried the legacy boot.... and f2 was (as expected... doesnt work)

i just did what i stated here and it was working again, bios was returned to default settings, and i just sit here having a smiling face...


and also., a very big reminder...

what ever happens, never turn off your computer while updating bios..just to be sure anything silly happens

btw, sorry for the past attitude...i hope i can be of service..

[Acer-Cory]

I've got an R7-571 here that I worked with this morning, and I was able to acheive what you're talking about. Legacy is only there so you can boot non UEFI stuff such as USB or DVDs like we've done for years. There is nothing that prevents you from taking any Acer product and putting any OS on it. We may not provide drivers or qualify the OS, but that doesn't mean it can't be done.

I made a quick video to demonstrate what I've always seen when having to enable legacy, and what I expect to happen on any Acer notebook.

http://www.youtube.com/watch?v=9Oddyoq_9wI&feature=youtu.be

[petrosd2012]

I did as you suggested (a good idea). I booted with Win8.1 and chose Repair and worked my way through the Command Prompt. I had downloaded and copied the 1.22 BIOS and 2.17 (UEFI/Windows) BIOS as recommended by Acer for this specific model. I tried them both. 2.17 gave an error "the command subset isn't present" (I forget the exact wording). I tried 1.22 and ran the update.bat file. It started but hten returned an error "ERROR 235 - OEM Check failed from BIOS Service".

At this point, I'll be happy if I can get into the BIOS and change it back to UEFI or remove the Secure Boot somehow, and copy the Files and Settings so I can install Windows 7 and be done with it.

Thank you for your help. I apologize for my own rudeness. I was frustrated at the situation and took it out on you. That was unfair.

[vaizaren · Accepted solution]

its okay..

btw, try again the 2.17 sir... 

unzip the exe there...

after that...

locate the update.bat then run it...