Re: Resetting BIOS to factory defaults when you donīt have access to i
- From: "SC Tom" <sc@xxxxxxx>
- Date: Sat, 26 Sep 2009 13:36:53 -0400
"Twayne" <nobody@xxxxxxxxxxxxxxxxxxx> wrote in message news:estF%23iqPKHA.4428@xxxxxxxxxxxxxxxxxxxxxxx
"dareys" <dareys@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:9FEA1C0A-3945-40D3-BD17-15BBE7B089C1@xxxxxxxxxxxxx
Greetings,
In an attempt to minimize suspected hacking on my box, I configured
security and
password protected the BIOS. I disabled a number of functions such as
the network card, all network functions and password protected all
boot devices and box itself.
In spite of having the passwords simple initially and oh my, written
them down. Yep. My BIOS is now inaccessible. I wrote my initial
question a while back and got the some good feedback.
The recommendations were;
A) Sometimes simply resetting the BIOS by removing the CMOS battery
for about 15 minutes (remove AC power cord first) will do the job.
B) Turn the computer on Without the Battery . This should Kill the
password . Turn computer off. Reinstall the Battery.
C) If Windows boots:
1.) Open a Cmd Prompt Window
2.) Invoke Debug
-o 70 2e
-o 71 ff
-q
*o denotes letter o for octal address, not numeral Zero
In most cases this will mimic the action of moving the BIOS reset
jumper without having to open the PC case.
Windows still booted so I tried A) B), or removing the CMOS battery.
C) sounded risky. Now the machine no longer boots in Windows mode and
I get a message indicating that the machine has been tampered with at
boot time.
... And to boot, I still get prompted for a password... All the
hardware documentation I have, indicates that in this case the mother
board has to be replaced. Can anybody corroborate that? It is an
Lenovo ThinkPad T60P.
I would appreciate any help you can afford me.
Thank you.
Jean-Pierre
You said 'C sounded risky': Does that mean windows booted? C was for if it booted. If that's the case, it's not a CMOS password problem.
It sounds like you might have a multi-level password setup to protect you from tampering. I'd go to the mfr's site and carefully recheck the data there.
It doesn't make sense to me that removing the battery or using the "reset" jumper on the mobo wouldn't kill the password. Perhaps you need to leave the machine powered OFF for a longer period of time, say a few hours. CMOS is very high impedance stuff and can take a long time to leak off a charge.
BTW: You have to UNPLUG the computer from the wall while you remove the battery sometimes. Otherwise the trickle charge for the battery can be capable of maintaining the CMOS memory, including the password.
Just hitting the power switch on the computer isn't good enough; it doesn't really turn everything off - several things can remain running, depending on the machine. And give it a few hours that way, just to make sure, then try to power it up.
I wouldn't think a power glitch would kill the mobo. Mess up the CMOS settings yes, but damage the mobo, no.
HTH,
Twayne`
It's the supervisor password that Jean-Pierre forgot. According to the Lenovo service manual, "If you forgot your supervisor password, Lenovo authorized servicer cannot reset your password. You must take your computer to a Lenovo authorized servicer or a marketing representative to have the system board replaced." It's not in CMOS, it's in an EEPROM on the MB.
Seems kind of severe for simply forgetting a password.
SC Tom
.
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