Resetting a BIOS chip very manually .#2

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Luchy

Joined Dec 3, 2024
1
Hy ppl or whatever. I also tried to reset this chip but failed miserably, I went to a shop whit my laptop which is an Asus tuf f15 . I tryed to short it whit the battery out also whit the computer on but absolutely nothing happend or I don't know which ones to short or bypass I just tried whit some small cisors to short the cip. At the shop they told me 150€ wich I think it's to much . I would like to buy the cip and some soldering machine wich in Total would be around 40€ max the only thing is that I don't know if I need to flash the bios on the cip since the cip is new.

Mod: link to old thread.
https://forum.allaboutcircuits.com/threads/resetting-a-bios-chip-very-manually.153848/post-1566091
 
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eetech00

Joined Jun 8, 2013
4,704
Hy ppl or whatever. I also tried to reset this chip but failed miserably, I went to a shop whit my laptop which is an Asus tuf f15 . I tryed to short it whit the battery out also whit the computer on but absolutely nothing happend or I don't know which ones to short or bypass I just tried whit some small cisors to short the cip. At the shop they told me 150€ wich I think it's to much . I would like to buy the cip and some soldering machine wich in Total would be around 40€ max the only thing is that I don't know if I need to flash the bios on the cip since the cip is new.

Mod: link to old thread.
https://forum.allaboutcircuits.com/threads/resetting-a-bios-chip-very-manually.153848/post-1566091
Are you trying to clear the password?
Or are you trying to reset bios to defaults?

Are you able to get into the BIOS configuration settings?
 

panic mode

Joined Oct 10, 2011
4,864
what are you trying to accomplish?

I also tried to reset this chip but failed miserably
BIOS is stored in a non-volatile memory such as ROM, PROM, EEPROM...
you cannot clear it like that. normally you do not want to touch this. the settings (and only settings) are stored in CMOS RAM. this RAM is volatile so it need to be backed up by a battery. not the big Li-battery that powers laptop but a small coin cell battery such as CR2032. on a laptop that battery may be replaced by a capacitor.

I went to a shop whit my laptop which is an Asus tuf f15 . I tryed to short it whit the battery out also whit the computer on but absolutely nothing happend or I don't know which ones to short or bypass I just tried whit some small cisors to short the cip.
shorting things without knowing what you are doing is a recipe for disaster. as mentioned there is more than one battery. so shorting wrong things can lead to damage. if the goal is clear CMOS RAM, remove coin cell battery for couple of minutes.


At the shop they told me 150€ wich I think it's to much . I would like to buy the cip and some soldering machine wich in Total would be around 40€ max the only thing is that I don't know if I need to flash the bios on the cip since the cip is new.
more likely you cripple the laptop and turn it into a $500 paper weight. repair can be done by trained people. and you are not one of them.
 
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sparky 1

Joined Nov 3, 2018
1,218
Manufacturers recommended instructions, steps in determining if the repair will require surgery or alternative hackology is enough.
Power off the Asus tuf f15 laptop. Possibly the mandate for UEFI compliance is promoting these hacking trends leading to smoke.
When the power is fully off, start the computer
at the same time hold F2, make sure it remains held down doing that right away.

After the obvious fails there are other repair methods for entering UEFI or BIOS
How to Enter the BIOS on a Windows Desktop or Laptop PC

After that write down the serial number and model name, go online click on the chat symbol at the bottom following link.
Contact Us | Official Support | ASUS USA
 
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iobound

Joined Dec 9, 2024
1
My mb has this bios chip. I flashed a new bios, and it killed the mb, no post after that. Is there anything I can with the chip that reset it to a state that the mb will post or allow me to re-flash?
 

sagor

Joined Mar 10, 2019
1,046
You can't just "reset" the BIOS after a bad flash. It is "bricked" now. The chip now has bad code, and will not run "normally". In some cases, a tech can access the chip's programming interface directly (JTAG interface). That takes special equipment.
 
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