Cmos password reset

bios please clear cmos

try this: Make sure the battery for the notebook is out in step 8


the procedure to reset the CMOS/BIOS is in the maintenance and service guide on page 46.

Follow these steps to clear the password:
NOTE: These steps also clear CMOS.
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4. Remove the battery (see Battery on page 48).
5. Remove the real-time clock (RTC) battery (see RTC battery on page 68).
6. Wait approximately 30 minutes.
7. Replace the RTC battery and reassemble the computer.
8. Connect AC power to the computer. Do not reinsert any batteries at this time.
9. Turn on the computer.
All passwords and all CMOS settings have been cleared.

don't trouble yourself
try this password if you are using compaq
75681807

Below is the guide to resetting the Cmos password. Below that is the link to the service guide the instructions refer to.

Clearing a Password

If the notebook you are servicing has an unknown password,
follow these steps to clear the password. These steps also
clear CMOS:
1. Prepare the notebook for disassembly (refer to Section 5.3,
“Preparing the Notebook for Disassembly,” for more
information).
2. Remove the real time clock (RTC) battery (refer to
Section 5.15, “RTC Battery”).
3. Wait approximately 5 minutes.
4. Replace the RTC battery and reassemble the notebook.
5. Connect AC power to the notebook. Do not reinsert any
battery packs at this time.
6. Turn on the notebook.
All passwords and all CMOS settings are cleared.

http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c01234011/c01234011.pdf

When you pull the battery it will set your cmos back to factory
defaults.

Do one thing first, Your CMOS holds a lot of important information so before you go messing around with the batteryWRITE DOWN YOUR SETTINGS.

There are a few different ways to reset the cmos, here's a few:

1. there are many default common passwords,
such as:

At boot-up note the BIOS provider (Award, AMI, Phoenix, IBM, etc.)

For Award BIOS' try these backdoor passwords:

AWARD_SW
j262
HLT
SER
SKY_FOX
BIOSTAR
ALFAROME
Lkwpeter
j256
AWARD?SW
LKWPETER
syxz
ALLy
589589
589721
awkward
CONCAT
d8on
CONDO
j64
szyx

For AMI BIOS' try these backdoor passwords:

AMI
BIOS
PASSWORD
HEWITT RAND
AMI?SW
AMI_SW
LKWPETER
A.M.I.
CONDO


For PHOENIX BIOS' try this backdoor password:

phoenix

how can i reset CMOS/BIOS password for HP compaq tc4400 laptop i have hp 500 notebook and i forget cmos/bios password . i remove cmos battery . but dont solve it . how can i solve it

Download and burn this cd http://www.9down.com/Hiren-s-BootCD-9-8-Keyboard-Patch-73110/
Boot your pc from it and use BIOS / CMOS Tools from it.

open your laptop bak side u see jumper near cmos cell set it to 2-3 position then start laptop.thenreser to its original position.
also put cmos cell for15 mniutes .
then start your laptop for 2-4 times.
then your bios reset.
then set your time ,date .
detect your hdd.rom.etc.

if you are refering to bios password then you have to locate the cmos battery and remove for 5 minutes or so,or clear cmos memory terminal on the motherboard by shorting it, but location of these is tricky, normally around the hard drive bay.

The only way is to clear the cmos settings. However, there is a special way to do it. First you have to take out the battery and the power adaptor from the laptop. Then you need to open the laptop and look on the main board for the cmos battery. Take it out for a few minutes, maybe 5 - 10 minutes. Then plug in the power adaptor without the cmos battery nor the laptop battery and boot the computer. It will ask you to hit F1 to either load default values or to save settings. Do that. Then shut down the computer. Make sure settings is saved though. Put in back the cmos battery and the laptop battery. When you reboot, it should boot up with no password.