Forgot Phoenix Bios Setup Utility password. received this message Service Num:BW47X21 can you help bypass password This is for a Laptop computer Dell Inspiron 5100

You may be able to access the bios using one of these backdoor passwords for the phoenix bios

BIOS
CMOS
phoenix
PHOENIX

Or you may be able to reset the bio password using this utility.
http://www.cgsecurity.org/wiki/CmosPwd

Some hardware or software has upset the serial number used by the BIOS (phoenix) to guarantee that the computer is the same as it was when it was bought. This is the trusted bit.
The setup utility needs to recalculate this number to include the new equipment, consult your laptop manufacturer Toshiba, via the support function.

If it's a BIOS password, ask the person that put it in. OR, contact the the Laptop Manufacturer for a one-time BIOS password.

http://dogber1.blogspot.com/2009/05/table-of-reverse-engineered-bios.html
http://www.biosman.com/bios-password.htm

http://www.ehow.com/how_5268844_reset-phoenix-bios-password.html

I just helped a friend out with this exact issue on the same notebook. Here is the instructions (step by step...well 4 steps) that worked perfectly. What you are doing is using a backdoor password set up by IBM/Lenovo.

Turn on your Thinkpad T60 computer.

Watch for the status message "To interrupt normal startup, press the blue ThinkVantage button" to appear on the screen. The only time you have the ability to access your BIOS is while this message is on your monitor. If this message disappears, you will have to restart your T60 and try again.

Press the "ThinkVantage" button on your T60. From the list of options that appears, select "Start setup utility." You will be prompted to enter your BIOS password. Type "merlin" and hit "Enter" to bypass the password prompt using your backdoor password and enter your main BIOS utility.

Select "Security." In this window, select "Set Password." Type the new password you want to use for your BIOS. Press "Enter" to finish resetting your T60 BIOS password.

Hope this helps...

Using a Backdoor BIOS Password

Some BIOS manufacturers implement a backdoor password. The backdoor password is a BIOS password that works, no matter what the user sets the BIOS password to. These passwords are typically used for testing and maintenance. Manufacturers typically change the backdoor BIOS passwords from time to time.
AMI Backdoor BIOS Passwords

Reported AMI backdoor BIOS passwords include A.M.I., AAAMMMIII, AMI?SW , AMI_SW, BIOS, CONDO, HEWITT RAND, LKWPETER, MI, and PASSWORD.
Award Backdoor BIOS Passwords

One reported Award backdoor BIOS password is eight spaces. Other reported Award backdoor BIOS passwords include 01322222, 589589, 589721, 595595, 598598 , ALFAROME, ALLY, ALLy, aLLY, aLLy, aPAf, award, AWARD PW, AWARD SW, AWARD?SW, AWARD_PW, AWARD_SW, AWKWARD, awkward, BIOSTAR, CONCAT, CONDO, Condo, condo, d8on, djonet, HLT, J256, J262, j262, j322, j332, J64, KDD, LKWPETER, Lkwpeter, PINT, pint, SER, SKY_FOX, SYXZ, syxz, TTPTHA, ZAAAADA, ZAAADA, ZBAAACA, and ZJAAADC.
Phoenix Backdoor BIOS Passwords

Reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX.
Backdoor BIOS Passwords from Other Manufacturers

Reported BIOS backdoor passwords for other manufacturers include:

Manufacturer BIOS Password
VOBIS & IBM merlin
Dell Dell
Biostar Biostar
Compaq Compaq
Enox xo11nE
Epox central
Freetech Posterie
IWill iwill
Jetway spooml
Packard Bell bell9
QDI QDI
Siemens SKY_FOX
SOYO SY_MB
TMC BIGO
Toshiba Toshiba

Or

Resetting a Toshiba BIOS Password
Download (Keydisk) http://www.cgsecurity.org/keydisk.exe will reset the BIOS password on Toshiba laptops.

Can be reset using the Key Disk.exe utility, to do this you need a 1.44Mb floppy disk. Format the disk using Windows and then with a hex editor, change the first five bytes of the second sector to 4B 45 59 00 00.

Then put the floppy into your machine and boot it up, you'll be asked for a password, just press Enter. Then when you're asked to set the password, type Y then Enter, this will get you into the bios configuration where you can then type in a new password.

You need to contact your pc manufacturer.
Tell them to provide you with the steps to remove and reseat the CMOS battery.
Then remove and reseat the CMOS battery which holds the BIOS password.
This step will remove the password.
Issue is resolved :)

Try this:

Phoenix Backdoor BIOS Passwords Reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX.

use the recovery disc go into bios under the word boot set cd dvd drive as first insert recovery disc restart comp follow instructions

On the mainboard near the coin battery you'll find a jumper. take it off and reboot. Replace it and reboot again. that works sometimes. If not you can go to the motherboards' BIOS like Phoenix and they have backdoors built in. Read on:
Backdoor passwords Many BIOS manufacturers have provided backdoor passwords that can be used to access the BIOS setup in the event you have lost your password. These passwords are case sensitive, so you may wish to try a variety of combinations. Keep in mind that the key associated to "_" in the US keyboard corresponds to "?" in some European keyboards. Laptops typically have better BIOS security than desktop systems, and we are not aware of any backdoor passwords that will work with name brand laptops.
WARNING: Some BIOS configurations will lock you out of the system completely if you type in an incorrect password more than 3 times. Read your manufacturers documentation for the BIOS setting before you begin typing in passwords
Award BIOS backdoor passwords:
[TABLE]
AMI BIOS backdoor passwords:
[TABLE]
PHOENIX BIOS backdoor passwords:
phoenix, PHOENIX, CMOS, BIOS
MISC. COMMON PASSWORDS
[TABLE]

Good luck...hope this helps...