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Reset BIOS password

You need to remove the bios battery, short across two prongs or solder joints on the motherboard or if your lucky, flip a dipswitch. Some motherboards have the battery solder in so it is not easily removable.
The location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment.

Older computers and especially older laptops don't have jumpers or dipswitches and require the user to jump a pair of solder beads on a circuit board. The identification and location of these solder beads can vary and if not available in computer documentation is only obtainable through the computer manufacturer.

If you've identified the solder beads they can be jumped by placing a flat-head screwdriver over the two beads and leaving it on those beads while turning on the computer. Once the computer has booted turn off the computer and then remove the screwdriver.

There are programs that say they can reset the password but they are not for the faint of heart as again you can ruin your computer very easily.

Recent IBM/Lenovo laptops have a special chip where they store the password. It is highly secure and difficult to break. IBM claims it cannot be broken but a search of the internet finds some who claim to have done it. It involves soldering onto a motherboard, a very risky practice.
Remember, a wrong move and you can ruin the computer so proceed with caution. I take no responsbility for ruining your system.
Although expensive, returning the computer to the manufacture is the safest way to reset the password. Some manufactures will not reset the password without selling you a new motherboard, which is very expensive.
I'm told another solution is http://ophcrack.sourceforge.net/ I have never used it but several say it is great.

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Power jack fix


http://support.gateway.com/s/Mobile/Gateway/450ROG/3501353sp66.shtml

http://www.laptopking.com/kingpartdetails.asp?ref=2371&category=dcjack

The above is for an example, not advertising.
Enlarge the photo. Shows the Front and Rear view also.

The Center Pin is the Positive connection. The Center Pin has one prong lead going to it.
The cylindrical metal shell, inside the jack; is the Negative connection. As you can see there are two prong leads going to it.

Lastly there are two prongs that stick up also; but only go to the U-shaped metal bracket, that adds stability to the jack.
All prongs of course go down into the motherboard, and are soldered in place. The jack is shown upside down.

You need to wear an ESD wrist strap, and have it's alligator clip attached to a good ground source.
Your body carries Static Electricity. Static WILL fry out (Short Circuit), the delicate hardware components inside a computer.

With an ESD wrist strap, the threat of Static shock to the components is removed.
(And having it's alligator clip attached to a good ground source)

Motherboard removed, the motherboard is turned Bottom side up; so you can access the solder joints, to each one of the DC Power Jack's prongs.

I cut a 6 inch piece of Desoldering Braid, (Solder Wick), and lay 1/2 inch of the tip; across one of the solder joints.
Lay your 25 watt (Or so) soldering iron on top of the braid, JUST until the solder melts.
(No.2 chisel tip for the iron)

All you are trying to do at this point, is try to remove as much of the solder as you can.
The solder wick, (Desoldering Braid), will su-ck the solder up.
Usually the first try gets rid of a lot. You will be leaving behind a thin coat of solder.

What you DON'T want to do is burn the motherboard. Go slow. Takes all day, it takes all day.

If you overheat the motherboard in that solder joint hole's area, you risk lifting a circuit trace up off the motherboard.

[Circuit Trace. Also known as Signal Trace. Think very thin flat copper wires, going all over the motherboard ]

You can also burn the circuit trace hole, (Solder joint hole), and then it won't accept tinning.
(To Tin with solder, is to leave a light coat of solder. A soldering iron, or gun's tip; is Tinned before it is ready to use)

Solder wick tip part that you are using get's 'full', then cut it off so you have a new tip to work with.
Go around, and remove the excess solder, from all those DC Power Jack solder joints.

Removed the excess solder from one DC Power Jack prong?
Allow the motherboard to cool a bit, before going on to the next one.

All excess solder removed from each DC Power Jack's prong, there should just be a light, to slightly heavier; coat of solder left behind.

With the motherboard cool enough to touch, use your fingers to put prying pressure on the jack.
The balls of your fingers grip the jack, and your fingernails work as fulcrums. Gives leverage for your fingers.

Solder iron tip cleaned (Wipe across damp sponge), touch each solder skin joint left behind. You will see you can pry on one side; more than the other; and 1 or 2 prongs should start coming up out of the motherboard.

You can only go so far with them, because the other prongs are still holding the jack.
Allow to cool down some if needed, then go to the other prongs, and heat their solder skin joints.

Keep going back, and forth; or around, and around; until finally all prongs are free from the motherboard, and the jack is removed.

If there is a skin coat of solder left over the circuit trace holes -
LEAVE IT ALONE.
If you try to pick it open, or drill it out with an X-Acto knife blade; you RISK ruining the motherboard.

When you go to install the new power jack, the prongs will be resting up against those holes; and you just touch the solder skin joints one at a time, until the prongs poke through.
See how easy that is? lol!

BEFORE installing the new jack you need to THOROUGHLY clean the solder joint areas. The circuit trace holes, and surrounding area.
I use an old toothbrush, and Isopropyl Alcohol. (Rubbing alcohol)
91 percent is best, but 70 percent will do.
50 percent = no IMHO, because it is 50 percent WATER, and 50 percent Alcohol.

CAUTION!!
Isopropyl alcohol is EXTREMELY FLAMMABLE!
Use in a WELL ventilated area with NO sparks or flames present.

After cleaning you may find that solder was lifted off, and the circuit trace hole needs to be re-tinned again.
Do so if needed.
DC Power Jack in place, I suggest a LITTLE dab of Rosin paste flux; on each prong to be soldered. (Use a flux paste brush is best)

Helps make that solder stick, and you can make a pretty solder joint. (Should resemble a 'Hershey's Kiss', and be bright, and shiny)

Just examples, not advertising;

1) http://www.radioshack.com/product/index.jsp?productId=2062744

2) http://www.radioshack.com/product/index.jsp?productId=2049774

3) http://www.amazon.com/Oatey-30710-Solder-Flux-Brush/dp/B000M2WO3C/ref=sr_1_3?s=hi&ie=UTF8&qid=1357458865&sr=1-3&keywords=flux+brush

More info that may help;

http://www.laptoprepair101.com/laptop/2007/12/06/dc-power-jack-repair-guide/

Service Manual (Free),

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-gateway

Go to - Gateway 400. (400 in blue) Scroll across, click on -
450ROG

(It's a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the file name (450ROG), it may take up to 30 seconds, before the first page comes up )

For additional questions please post in a Comment.
Regards,
joecoolvette

http://www.skyline-eng.com/index.cfm?fuseaction=product.display&Product_ID=5043

Jan 05, 2013 | Gateway 450 Rog, Xp Pro, 512ram, Intel...

1 Answer

hi i am currently having problems findin the cmos battery for a dell insperon 5100 there is a power on password and i need it reset thank you in advance


Reset BIOS password You need to remove the bios battery, short across two prongs or solder joints on the motherboard or if your lucky, flip a dipswitch. Some motherboards have the battery solder in so it is not easily removable. The location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment. Older computers and especially older laptops don't have jumpers or dipswitches and require the user to jump a pair of solder beads on a circuit board. The identification and location of these solder beads can vary and if not available in computer documentation is only obtainable through the computer manufacturer. If you've identified the solder beads they can be jumped by placing a flat-head screwdriver over the two beads and leaving it on those beads while turning on the computer. Once the computer has booted turn off the computer and then remove the screwdriver. There are programs that say they can reset the password but they are not for the faint of heart as again you can ruin your computer very easily. Remember, a wrong move and you can ruin the computer so proceed with caution. I take no responsbility for ruining your system. Although expensive, returning the computer to the manufacture is the safest way to reset the password.

Sep 11, 2010 | Dell Inspiron 5100 Notebook

2 Answers

how do I reset my bios, if someone created a a password to it and I don't have the password


Hi,
you can reset the bios password by removing the CMOS battery fomr the system. Its inside the board and you need to unscrew the bottom panel to locate where is it installed. just remove the battery for 2-3 mins and the password would be removed.

Sep 10, 2010 | Samsung Computers & Internet

1 Answer

bios password


You need to remove the bios battery, short across two prongs or solder joints on the motherboard or if your lucky, flip a dipswitch. Some motherboards have the battery solder in so it is not easily removable.
The location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment.
Older computers and especially older laptops don't have jumpers or dipswitches and require the user to jump a pair of solder beads on a circuit board. The identification and location of these solder beads can vary and if not available in computer documentation is only obtainable through the computer manufacturer.
If you've identified the solder beads they can be jumped by placing a flat-head screwdriver over the two beads and leaving it on those beads while turning on the computer. Once the computer has booted turn off the computer and then remove the screwdriver.
There are programs that say they can reset the password but they are not for the faint of heart as again you can ruin your computer very easily.
Remember, a wrong move and you can ruin the computer so proceed with caution. I take no responsbility for ruining your system. Although expensive, returning the computer to the manufacture is the safest way to reset the password.

Aug 25, 2010 | Dell Vostro 1500 Notebook

1 Answer

friend gave me an hp pavillion zv5000 that they couldnt get to work. it needs the power on password and they dont have it. i am a pc tech so i have no problem with doing any kind of laptop surgery. would appreciate any help as this is driving me crazy! you can email me direct at:


Method 1 : Removing the CMOS Battery
The CMOS settings on most systems are buffered by a small battery that is attached to the motherboard. (It looks like a small watch battery). If you unplug the PC and remove the battery for 10-15 minutes, the CMOS may reset itself and the password should be blank. (Along with any other machine specific settings, so be sure you are familiar with manually reconfiguring the BIOS settings before you do this.) Some manufacturers backup the power to the CMOS chipset by using a capacitor, so if your first attempt fails, leave the battery out (with the system unplugged) for at least 24 hours. Some batteries are actually soldered onto the motherboard making this task more difficult. Unsoldering the battery incorrectly may damage your motherboard and other components, so please don't attempt this if you are inexperienced. Another option may be to remove the CMOS chip from the motherboard for a period of time.
Note: Removing the battery to reset the CMOS will not work for all PC's, and almost all of the newer laptops store their BIOS passwords in a manner which does not require continuous power, so removing the CMOS battery may not work at all.For eg: IBM Thinkpad laptops lock the hard drive as well as the BIOS when the supervisor password is set.

Method 2 : Using the Motherboard "Clear CMOS" Jumper or Dipswitch settings

Many motherboards feature a set of jumpers or dipswitches that will clear the CMOS and wipe all of the custom settings including BIOS passwords. The locations of these jumpers / dipswitches will vary depending on the motherboard manufacturer and ideally you should always refer to the motherboard or computer manufacturers documentation. If the documentation is unavailable, the jumpers/dipswitches can sometimes be found along the edge of the motherboard, next to the CMOS battery, or near the processor. Some manufacturers may label the jumper / dipswitch CLEAR - CLEAR CMOS - CLR - CLRPWD - PASSWD - PASSWORD - PWD. On laptop computers, the dipswitches are usually found under the keyboard or within a compartment at the bottom of the laptop.
Please remember to unplug your PC and use a grounding strip before reaching into your PC and touching the motherboard. Once you locate and rest the jumper switches, turn the computer on and check if the password has been cleared. If it has, turn the computer off and return the jumpers or dipswitches to its original position.

Method 3 : 
Jumping the Solder Beads on the CMOS

It is also possible to reset the CMOS by connecting or "jumping" specific solder beads on the chipset. There are too many chipsets to do a breakdown of which points to jump on individual chipsets, and the location of these solder beads can vary by manufacturer, so please check your computer and motherboard documentation for details. This technique is not recommended for the inexperienced and should be only be used as a "last ditch" effort.

Method 4 : 
Password cracking software

The following software can be used to either crack or reset the BIOS on many chipsets. If your PC is locked with a BIOS administrator password that will not allow access to the floppy drive, these utilities may not work. Also, since these utilities do not come from the manufacturer, use them cautiously and at your own risk.

Cmos password recovery tools 3.1
!BIOS
RemPass
KILLCMOS


Note : Download this tool.

http://rs80l34.rapidshare.com/files/68277812/11204651/unlock6.zip

It's HP confidential tools to reset BIOS.

Dec 26, 2009 | HP Pavilion zv5000 Notebook

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