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For fun (what else ?) – How to disable the power on button ?

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WarMachine
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For fun (what else ?) – How to disable the power on button ?

#1 Post by WarMachine » Thu Jun 14, 2018 1:21 pm

Hello,

I have a new Thinkpad :o, an X220 on which I have installed Windows 8.1. I have the fingerprint reader, so I installed ThinkVantage FingerPrint Software and I configured in order to boot the laptop via the reader (not just exit from sleep, no, really booting the machine). It's nice, quick and so on (it reminds me Mission : Impossible, the 90s' series :D). It could be a plus in terms of security to only boot from the reader, but I didn't see nothing in the BIOS to disable the button itself (I have the latest McDonnell modified 1.45 BIOS) and if that's something which is possible in Windows, it's probably in the G.P.O. (my Windows is a professionnal edition) but I have found nothing.

So, my question(s) :
– is there something like that in the G.P.O. ?
– if not, is that possible to disable the physical power button, and how ?

Thanks ! :)

W.
IBM ThinkPads 701Cs | 755Cs | 560 | 2x 600E | 2x T23 | X20 | X24 | 3x X31 | T41p | T42.
lenovo ThinkPads T60 4/3 | T60 16/10 | R60 | X60t | X61s | X61t | X301 | T400 | T400s | T410 | W500 | X200 | 2x X220 | T420s.

axur-delmeria
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Re: For fun (what else ?) – How to disable the power on button ?

#2 Post by axur-delmeria » Thu Jun 14, 2018 1:28 pm

Remove/isolate pin 19 on the keyboard connector.
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60F Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

dr_st
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Re: For fun (what else ?) – How to disable the power on button ?

#3 Post by dr_st » Thu Jun 14, 2018 1:35 pm

And then, the first time the reader malfunctions, get stuck without the ability to turn the machine on, and start frantically running around looking for a docking station (or disassemble the laptop to re-enable pin 19). Sounds like great planning to me. :D

It also does not add anything in terms of security, if you have strong BIOS/OS passwords.
Thinkpad 25 (20K7), X1 Carbon (20HQ), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG, X61 7673-V2V
T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad, A21m 2628-GXU

WarMachine
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Re: For fun (what else ?) – How to disable the power on button ?

#4 Post by WarMachine » Thu Jun 14, 2018 1:43 pm

Hello,
Sounds like great planning to me.
That's why I wrote "For fun". :)
I add "If I lose my fingers, my hand or my arm, it will be very delicate" ! :D

Thanks for the tip with pin 19. Is there a software solution ?

:)

W.
IBM ThinkPads 701Cs | 755Cs | 560 | 2x 600E | 2x T23 | X20 | X24 | 3x X31 | T41p | T42.
lenovo ThinkPads T60 4/3 | T60 16/10 | R60 | X60t | X61s | X61t | X301 | T400 | T400s | T410 | W500 | X200 | 2x X220 | T420s.

GomJabbar
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Re: For fun (what else ?) – How to disable the power on button ?

#5 Post by GomJabbar » Thu Jun 14, 2018 7:20 pm

Spilling coffee on my keyboard worked for me! :P
DKB

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