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Bet my friend I could get around his BIOS password and lost.

post #1 of 4
Thread Starter 
I was at my friends house. We discussed several things the one in particular to why I'm posting is. I bet you $1.00 you can't get around my bios password. So he setup a bios password. I choose the most simplest method and decided to remove the motherboard battery for 20 minutes. Probably overkill but I wanted to make sure that I didn't lose the bet. 20 minutes passes by and the BIOS password is still there. I not only lost the bet but I felt incredibly dumb. This is a desktop btw. Laptops are a little harder to remove the battery.

So I gotta ask where did my plan fail here? Is there some kind of new security feature on some / newer motherboards that don't need power to save bios settings? Is their a copy backed up to the hard drive now? I'm really confused. I should have just cleared the CMOS with the CMOS jumper assuming he has one on his motherboard. But even if I did that it still wouldn't make sense for that to have possibly worked. Considering removing the battery to let the power draw out of the motherboard didn't. Unless I am missing something here.

Please educate me I obviously don't know as much as I think I do. smile.gif
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My System
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CPUMotherboardGraphicsRAM
i7 920 D0 @ 4.0Ghz Asus P6T EVGA GTX 680 4GB G.Skill 3x2GB DDR3 1600 
Hard DriveOSMonitorKeyboard
Western Digital 1TB Caviar Black Windows 10 Home 64bit LG 30" 2560x1600 CMSTORM Quickfire Tenkeyless 
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post #2 of 4
just use the cmos reset jumper if that didn't work?

EDIT: did you leave the power plugged in when you pulled the cmos battery? that would keep the bios settings. the jumper would reset it
post #3 of 4
Thread Starter 
Yea I unplugged everything including the power cable and even flipped the power supply switch for good measure. If the jumper would reset it why wouldn't pulling the CMOS battery work?
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 D0 @ 4.0Ghz Asus P6T EVGA GTX 680 4GB G.Skill 3x2GB DDR3 1600 
Hard DriveOSMonitorKeyboard
Western Digital 1TB Caviar Black Windows 10 Home 64bit LG 30" 2560x1600 CMSTORM Quickfire Tenkeyless 
PowerCaseMouseAudio
Corsair TX750 watt Haf 932 Razer Deathadder AD700x 
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 D0 @ 4.0Ghz Asus P6T EVGA GTX 680 4GB G.Skill 3x2GB DDR3 1600 
Hard DriveOSMonitorKeyboard
Western Digital 1TB Caviar Black Windows 10 Home 64bit LG 30" 2560x1600 CMSTORM Quickfire Tenkeyless 
PowerCaseMouseAudio
Corsair TX750 watt Haf 932 Razer Deathadder AD700x 
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post #4 of 4
Quote:
Originally Posted by roberts91 View Post

I was at my friends house. We discussed several things the one in particular to why I'm posting is. I bet you $1.00 you can't get around my bios password. So he setup a bios password. I choose the most simplest method and decided to remove the motherboard battery for 20 minutes. Probably overkill but I wanted to make sure that I didn't lose the bet. 20 minutes passes by and the BIOS password is still there. I not only lost the bet but I felt incredibly dumb. This is a desktop btw. Laptops are a little harder to remove the battery.

So I gotta ask where did my plan fail here? Is there some kind of new security feature on some / newer motherboards that don't need power to save bios settings? Is their a copy backed up to the hard drive now? I'm really confused. I should have just cleared the CMOS with the CMOS jumper assuming he has one on his motherboard. But even if I did that it still wouldn't make sense for that to have possibly worked. Considering removing the battery to let the power draw out of the motherboard didn't. Unless I am missing something here.

Please educate me I obviously don't know as much as I think I do. smile.gif

Times have changed. Some modern motherboards with a UEFI BIOS store the BIOS password in a separate NVRAM IC on the board, which is not wiped out when you clear the CMOS. If you lose the password (or an enterprising friend adds a password to your BIOS and doesn't tell you what it is) can mean having to pull the NVRAM IC off the board and replacing it with a blank one. Not nice.

Another option is a TPM - Trust Platform Module, which is basically an IC that merges security of the BIOS and Operating System to protect the pre-boot environment, encrypting the key components in the OS that contain security credentials, etc. A system with a TPM and TPM-enabled in Windows won't even allow you to pull the primary HDD out and hook it up to another Windows PC to get into it, a grave situation indeed if the TPM password is lost and the backup key data is lost. LOL. Most consumer-oriented motherboards lack TPM, but a lot of newer generation Laptops are starting to come with TPM embedded. My P9X79 WS motherboard has a 20-pin header for a TPM on the motherboard, but lacks the TPM itself due to export restrictions.

Greg
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