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Antonio King asked on

Acer Aspire 5051 Bad BIOS flash

My laptop is an Acer Aspire 5051 and I stupidly edited the latest bios for it and flashed it.

It now won't boot, nothing at all happens when I turn it on.

Does anyone know a way to recover the bios on these laptops?
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8/22/2022 - Mon
Robert Sutton Jr

You have 2 statements there.... One states you edited the bios and the other states you flashed it... Can you explain a little further what you did along with your
old and new bios rev. numbers. Thanks.

Ps. Have you tried clearing the CMOS?
Antonio King

ooops sorry, I edited a bios file, and then flashed my laptop with the edited file.
Antonio King

I have also tried clearing the cmos.
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Robert Sutton Jr

When you say you edited the file, what is the file extension for the file and what did you use to edit it, and more importantly what DID YOU edit in the file?

The laptop can be paperweight now, sadly. If when you turn power on, it should be started something even POST error so that you can reflash again with good bios file.
Robert Sutton Jr

Im trying to figure out what you did Alan so I can help you better.... If you explain what you actually EDITED in the rom or bin or whatever type file the image was contained in, I can be more assistance... By the way it is sounding, you may have to use that same image and re-prgrom the EEPROM (The actual chip that maintains your bios) ..... maybe you can explain to me why you would edit it and what you were trying to accomplish........?

Read my explanation below:

EEPROM and its correlation with the Bios:

EEPROM stands for Electrically Erasable Programmable Read Only Memory, and is pronounced double-ee-prom or e-e-prom. It's a long name for a small chip that holds bits of data code that can be rewritten and erased by an electrical charge, one byte at a time. EEPROM data cannot be selectively rewritten; the entire chip must be erased and rewritten to update its contents.

While Random Access Memory (RAM) loses its data every time you power down your computer, EEPROM does not require a power source to maintain its data. For this reason EEPROM is commonly used by many BIOS chips to save system settings.

BIOS stands for Basic Input/Output System. When you turn on your computer the BIOS chip executes a program called CMOS (Complementary Metal Oxide Semiconductor) that holds settings, which enables the computer to recognize your hardware. You can enter the CMOS program during boot-up to modify BIOS settings. You might need to do this, for instance, when you get a new hard drive. After you modify the settings the BIOS will save the new copy of instructions to EEPROM.

If you messed up your bios by EDITING the updated flash image prior to FLASHING your pc...Well, you may have no choice in the matter and reprogramming your EEPROM(Basically, you would have to program the FLASH image into the EEPROM which can easily be done with the right techinical person provided you have an image to work with) back to your board...... ALL you need is the image and obviusly an emulator or program adapter... and that can be found at the link below:

Let me know..... You might have no choice here...
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Antonio King

I used a program designed for creating/editing phoenix BIOS files (This was a few months ago, so can't remember the name!) to change the loadup image that is displayed on post, I followed instructions I found and ensured the image met the maxmium allowed specification.
After flashing my laptop with this BIOS the machine fails to post or do anything.
The bios image I flashed came from here...
And is/was the latest bios available from an official source.

Sorry I didnt explain fully from the beginning.

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The BIOS chip can be restored with specialised equipment, but you'd have to turn it in to a workshop. If there is no restore option as suggested by nobus, that might be your only chance.
Antonio King

Thank you all for your advice people. It is greatly appreciated.

Fortunately acer have just contacted me saying it can be sent in for repair. Yay!
Your help has saved me hundreds of hours of internet surfing.

as i suggested also . .