Question about Sony VAIO GRX500KA (PCG-GRX500KA) PC Notebook

2 Answers

I forgot my power-on password, so I'm locked out of my laptop, all I see is the enter password screen, How can remove this? is there a master password?

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  • reptar10_200 Oct 08, 2009

    How much will it cost?

  • reptar10_200 Oct 08, 2009

    I forgot my power-on password, so I'm locked out of my laptop, all I see is the enter password screen, How can remove this? is there a master password?

  • reptar10_200 Oct 08, 2009

    Are you sure it's free? my laptop is out of warranty.

  • reptar10_200 Oct 08, 2009

    I can't boot from a cd drive, and I can't enter the bios setting to change the boot sequence; the hard drive is removed, so I guess I'm unable to boot, from another source,

    Is there some type of shorting method that will allow me to clear the chip? is there a way for me to indentify the chip's location on the motherboard?

  • reptar10_200 Oct 08, 2009

    How much does a backdoor password normally cost?

  • reptar10_200 Oct 08, 2009

    I seen where sometimes you able to short this chip using a paperclip or a soldered wire, is this possible? Also what kinds of clues do you know that will help me indentify this chip on the motherboard? How does it look?

  • reptar10_200 Oct 08, 2009

    thanks for all the info, I thought this laptop was an older one, so pretty much have to call Sony huh? you don't any backdoor passwords? For the phoenix bios? When I disconnect the cmos battery it does say default configuration used date and time lost, can't I use a default password to gain access?

  • reptar10_200 Oct 08, 2009

    I appreciate all your help.

  • reptar10_200 Oct 08, 2009

    I appreciate all your help.

  • zaheer abbas
    zaheer abbas Jul 19, 2012

    ok dear send me machine service tag number i send master pasword mail me



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Your laptop has an SMI security chip that stores the password. Clearing CMOS will not help. If your have a power on lock instead of a hard drive boot lock, there are only 2 options. First call Sony with the proof of ownership and endure the unpleasant experience of begging for the password that you will have to pay for. Second, replace the security chip, which is a tiny surface-mount chip. Only a handful of techs has the kind of skill to perform such a feat.

But if the lock is on the hard drive boot only, you can boot a DOS CD or floppy and use a debugger to clear the SMI BIOS data including the serial number and password. Please let me know if you are able to boot from an alternate device.

Posted on Oct 08, 2009

  • 4 more comments 
  • Ancestor_22 Oct 08, 2009

    You will be lucky if you get a tech from Sony to help you even if you pay for it. I have never heard anybody getting the backdoor password for free when it is out of warranty.

  • Ancestor_22 Oct 08, 2009

    That depends on the tech you get. I would imaging it will anywhere from free, though unlikely, to $80. You best bet is to give Sony a call.

  • Ancestor_22 Oct 08, 2009

    The security chip is an EEPROM based chip. It retains the data indefinitely even without power. You simply can not reset it with a jumper. If you can't get the master password, your only option is to replace the security chip with a blank one. The laptop will reinitialize a blank chip without a password, but it will be without a serial number also. I have seen ads for security chip replacement services for about $100. I have no idea if they are any good though.

  • Ancestor_22 Oct 08, 2009

    The paper clip trick only works on only laptops. There is no reset/clear pin of any kind on an SMI security chip. There is no paper clip, jumper, or pixie dust to reset the chip other than directly write to the EEPROM data area. It is usually a rectangular surface-mount integrated circuit with 8 pins. It is about the size of a water melon seed. Here is one one Ebay:

    If you are not super skilled with the solder iron, you can send it off the a company like this one:

  • Ancestor_22 Oct 08, 2009

    Caught a typo on the last message. First sentence should read:

    "The paper clip trick only works on older laptops"

  • Ancestor_22 Oct 08, 2009

    There is no default password for that laptop. I don't think anybody but Sony will be able to get you the unique password calculated from the serial number. The security chip can not be cleared even if you remove the power from it for 100 year. It does not need power to retain the data. The data is burnt into the EEPROM. In order to change the data, the EEPROM will have to be reprogrammed. Clearing CMOS will do nothing to change the password. The CMOS data is stored in a different chip.

    The whole reason the manufacture did this is to discourage criminals from stealing laptops. The security on the older laptops were easy to bypass. Laptops with SMI security chips are much harder to defeat.

    I am sorry for your predicament. Your options are limited. Don't bother wasting time looking for magic fixes. There is none other than what I already told you.


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You have to bring the unit into the nearest Sony Center, this is a Device security feature and they only have tools to remove and reset the password.

Posted on Oct 08, 2009

  • micromaster
    micromaster Oct 08, 2009

    As I know it will be free of charge on any sony service center,

  • micromaster
    micromaster Oct 08, 2009


    You have to bring the unit into the nearest Sony Center,
    this is a Device security feature and they only have tools to remove
    and reset the password.



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1 Answer

How can i reset my bios password cause i forgot it and how can i remove it coz when i start my lapto

You can remove any set bios passwords with the bios master password. Just visit and click Unlock HP/Compaq Bios
That page shows you how to get the error/hash code needed to create the Bios Master Password. You order then enter your computer info and error-hash code.
They calculate the Bios Master Password from your information and email you it along with instructions on how to use it. They usually respond within an hour or two but never more than 8 hours and then your are unlocking the bios on your laptop. Knowledge and Service is outstanding. They use PayPal so you wont get cheated and they guarantee their service.
I use them when I get a laptop with a bios password that is unknown.

Feb 28, 2012 | HP Compaq Presario CQ57-229WM Notebook PC


Lock and Unlock most TV's

Having trouble with setting your Parental Controls (V-Chip)?
The factory preset password is 0000. This password must be used first before setting your own personal password. It is recommended that you keep your personal password in a safe place and away from children. In the event you loose your personal password the master password is 8202. The master password overrides all passwords. The master password can't be changed and should be kept in a safe place away from children.
0000, 1078, 1111, 3808, 5050, 8202.
Mitsubishi LCD TV:
Bypassing the V-Chip Lock After you set the lock, you need your passcode to view
a V-Chip locked program, view the locked TV, cancel
the lock, or enter the V-Chip lock menus.
If you forget your passcode, you can view the locked
TV without entering your passcode. When your
password is requested, press the number 9 and QV
buttons on the remote TV control at the same time.
This process temporarily unlocks the TV.
When entering the V-Chip Lock menu, this process
deletes your old passcode and prompts you to enter a
new passcode.

AOC: 0,0,0,0
LG: 7,7,7,7
PHILIPS: 0,7,1,1
SONY: 4,3,5,7
VIZIO: 0000, 2489, 5351, 8202, 8205, 8206

Emerson/Sylvania/Funia: 0000
NOTES from Emerson/Sylvania/Funai:
1.Make sure to enter the exact same new password in the
"Confirm Password" space as one in the space. If they are
different, the space is cleared for reentering.
2. Your password will be erased and return to the default(0000) when a power failure occurs or this TV has been
unplugged for more than 10 seconds. If you forget the password,
unplug the power cord for more than 10 seconds to
restore the password to 0000.

Sharp TV:
Sharp LCD TV Clearing the secret number using the remote buttons and the TV's buttons.
If you forgot the secret number, clear the secret number using the following procedure:

1) Press MENU, and the MENU screen displays.

2) Press Left/Right arrow buttons to select 'SETUP'

3) Press UP/DOWN arrow buttons to select 'EZ setup', 'CH setup', 'Parental CTRL' or RESET, and the SECRETNUMBER INPUTSCREEN DISPLAYS.

Press and Hold both CH UP and VOL+ ON THE TV SIMULTANEOUSLY until the message appears on the screen. The SCECRET NUMBER IS ****.

on Aug 17, 2010 | Televison & Video

1 Answer

I need a master key for my wii because i forgot my password

Go to and enter your 8 digit confirmation number there. When you do so, make sure that whatever today's date is, your Wii is set to that date. (And select Today's date from one of the 3 possible choices.)

(To get the confirmation number, go into Parental control settings, click I forgot on enter pin screen, and Click I forgot on answer secret question screen. This is where you come to where you enter the master password, and the confirmation number you need, to get this master password.)

Jul 30, 2011 | Nintendo Wii Console

1 Answer

I cant open my 6060 phone its because i forgot the security code and now its lock ..what should i do?

If you want to remove the security lock without entering your password you need to get the master reset code. This code is available at Once you remove the lock you can create new password and use it.

Jul 18, 2011 | Cell Phones

1 Answer

Hello - i need the master code for durabook notebooks because i forgot my password and cant enter the bios setup please help

In order to reset the Master BIOS password on a durabook, you need to remove the CMOS battery and leave it out for a period of time. This will reset everything and allow you to enter the BIOS screen again.
You can find the User Manual for the durabook here
Hope this helps.

Feb 18, 2011 | Computers & Internet

1 Answer

My hp laptop is lock it keep asking me my password

if it asks for a pasword after it boots up ...and before entering in the welcome screen of means that it has a user password made by you ..or someone else...and you will have to ask the one that made it ...or you need to reinstall the operation system and the password will be gone..
If it is made by mistake ..and it do not have a password try to hit enter and will log in ...In this case the welcome screen was replaced with the log in screen and this is the reason that makes this be displayed..
if it asks for a password and it is new..and the password is displayed when you want to install it have to contact the seller or the manufacturer for the initial code..
also ..some laptops have a power on password and if you forgot it will have to remove the bios battery so to make it "forgot it "

Sep 30, 2010 | Computers & Internet

1 Answer

Forgot the Password on the Pantech Duo Smartphone

If you forgot the password to unlock Device-Lock, follow the
steps below to activate Master Clear.
1. Switch off the power and remove the SIM card.
2. Switch on the power. Press ‘*25327#’ on the Home screen
and then press OK.

^that is straight from the pantech duo manual. good luck!

Jul 22, 2010 | Pantech Duo Smartphone

4 Answers

My t mobile tap is user password locked i forgot the password can i hard reset it manually please help

I found this answer at Howard Forums from a user named JHDreamer
1) Power up device and when prompted to enter password enter 1234

2) Press end key twice at the password error screen

3) Enter dial pad screen

4) Type in *1673492846 then press down on the D-pad

5) Select menu option 8, 1 , 1.

6) Let device reset and your done =]

If you don't want to do a master rest, do this. Thanks to BillA*

1. Connect the phone with a serial connection such as NSPro box.
2. Using CDMAWS read the following addresses:
T469/559 - read 0x023C0000-023D0000
A887 - read 0x02570000-02580000
3. Find the lock code in the bin around the string "36245"

Feb 10, 2010 | Cell Phones

2 Answers

Lenovo master password forgotten

i own one too, and only way to fix that is to reset the BIOS, i mean is the battery removal.

Dec 19, 2008 | Lenovo 3000 C200 Notebook

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