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Forgot BIOS password

Hello LinusTechTips Forum,

  About a few years ago, my friend fixed me my laptop and change the BIOS password to something (kinda got trolled). I tried asking him the password but he couldn't remember it. Any ideas how to reset it? My BIOS is Phoenix Technology. I tried 12345 as the original password but didn't help.

 

Thanks

PS: Also tried KillCMOS and CmosPwd but no idea how to use KillCMOS and driver ioperm isn't working for CmosPwd

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Have you pulled the CMOS battery?

QUOTE ME IF YOU WANT A REPLY!

 

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2 minutes ago, BigDamn said:

Have you pulled the CMOS battery?

I don't know where is it located. I unscrew it already but I don't actually know the shape of CMOS battery

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Possibly something like this:

 

QUOTE ME IF YOU WANT A REPLY!

 

PC #1

Ryzen 7 3700x@4.4ghz (All core) | MSI X470 Gaming Pro Carbon | Crucial Ballistix 2x16gb (OC 3600mhz)

MSI GTX 1080 8gb | SoundBlaster ZXR | Corsair HX850

Samsung 960 256gb | Samsung 860 1gb | Samsung 850 500gb

HGST 4tb, HGST 2tb | Seagate 2tb | Seagate 2tb

Custom CPU/GPU water loop

 

PC #2

Ryzen 7 1700@3.8ghz (All core) | Aorus AX370 Gaming K5 | Vengeance LED 3200mhz 2x8gb

Sapphire R9 290x 4gb | Asus Xonar DS | Corsair RM650

Samsung 850 128gb | Intel 240gb | Seagate 2tb

Corsair H80iGT AIO

 

Laptop

Core i7 6700HQ | Samsung 2400mhz 2x8gb DDR4

GTX 1060M 3gb | FiiO E10k DAC

Samsung 950 256gb | Sandisk Ultra 2tb SSD

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7 minutes ago, BigDamn said:

Possibly something like this:

 

Wait, if I plug it out, the dates will keep losing? I know that the password will be gone but it would be really annoying if the dates keeps changing. Also, the video said there might be a check sum error. I am kind of scared. My laptop is the Lenovo U41-70 80JV. Will it be okay?

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7 minutes ago, David Anderson said:

Wait, if I plug it out, the dates will keep losing? I know that the password will be gone but it would be really annoying if the dates keeps changing. Also, the video said there might be a check sum error. I am kind of scared. My laptop is the Lenovo U41-70 80JV. Will it be okay?

You'll lose the motherboard date and time, which it'll ask you to set once you boot. But then it'll be fine after that. 

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3 hours ago, BigDamn said:

Possibly something like this:

 

It looks like mine stay stuck on the motherboard. I can't get it out

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8 hours ago, BigDamn said:

Possibly something like this:

 

I have tried plugging it out for 15 minutes but nothing happened

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Your BIOS password is likely stored somewhere else and may not be able to be reset. Sorry man

 

QUOTE ME IF YOU WANT A REPLY!

 

PC #1

Ryzen 7 3700x@4.4ghz (All core) | MSI X470 Gaming Pro Carbon | Crucial Ballistix 2x16gb (OC 3600mhz)

MSI GTX 1080 8gb | SoundBlaster ZXR | Corsair HX850

Samsung 960 256gb | Samsung 860 1gb | Samsung 850 500gb

HGST 4tb, HGST 2tb | Seagate 2tb | Seagate 2tb

Custom CPU/GPU water loop

 

PC #2

Ryzen 7 1700@3.8ghz (All core) | Aorus AX370 Gaming K5 | Vengeance LED 3200mhz 2x8gb

Sapphire R9 290x 4gb | Asus Xonar DS | Corsair RM650

Samsung 850 128gb | Intel 240gb | Seagate 2tb

Corsair H80iGT AIO

 

Laptop

Core i7 6700HQ | Samsung 2400mhz 2x8gb DDR4

GTX 1060M 3gb | FiiO E10k DAC

Samsung 950 256gb | Sandisk Ultra 2tb SSD

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  • 1 month later...
On 12/21/2018 at 11:00 AM, BigDamn said:

Your BIOS password is likely stored somewhere else and may not be able to be reset. Sorry man

 

Can I try replacing a new CMOS Battery? It is only the best solution that I could think of right now

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  • 10 months later...
Quote

Supervisor password

A supervisor password protects the system information stored in the BIOS. The user must enter the supervisor password to get access to the BIOS and change the system configuration.

 

Attention: If you forget the password, there is no service procedure to reset the password. The system board must be replaced for a scheduled fee.

The quote is from the Hardware Maintenance Manual for this model, on some modern laptops, resetting the bios does not clear the bios password, especially on commercial models

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Looks like your friend owes you a new motherboard :)

 

 

 

The direction tells you... the direction

-Scott Manley, 2021

 

 

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