Question about Dell Inspiron 1501 Notebook
Resetting the BIOS Password using Hardware
If you cannot access the machine after if has been powered up, it is still possible to get past the BIOS password. The BIOS password is stored in CMOS memory that is maintained while the PC is powered off by a small battery, which is attached to the motherboard. If you remove this battery, all CMOS information (including the BIOS password) will be lost. You will need to re-enter the correct CMOS setup information to use the machine. The machines owner or user will most likely be alarmed when it is discovered that the BIOS password has been deleted.
On some motherboards, the battery is soldered to the motherboard, making it difficult to remove. If this is the case, you have another alternative. Somewhere on the motherboard you should find a jumper that will clear the BIOS password. If you have the motherboard documentation, you will know where that jumper is. If not, the jumper may be labeled on the motherboard. If you are not fortunate enough for either of these to be the case, you may be able to guess which jumper is the correct jumper. This jumper is usually standing alone near the battery. If you cannot locate this jumper, you might short both of the points where the battery connects to the motherboard.
If all else fails, you may have to clear the BIOS password by resetting the RTC (Real Time Clock) IC (Integrated Circuit) on your motherboard.
Many RTC's require an external battery. If your RTC is one of this type, you can clear the BIOS password just by unsocketing the RTC and reseating it.
Posted on Feb 02, 2010
Then you can try it out by removing the jumper.
Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password.
The location of this jumper varies depending upon the motherboard brand.You should read your motherboard
manual to check its location.If you don't have the manual then look for the jumpers near the CMOS battery.
Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS etc.When you find the jumper,look carefully.
There will be 3 pins and the jumper will be joining the center pin to either left or right pin.What you need to
do is remove the jumper and join the center pin to the opposite pin.e.g.if the jumper joins center pin to left pin
then remove it and join center pin to right pin.Now wait for a few seconds and then again remove the jumper and join
the center pin to left pin.Make sure to turn the PC off before opening the cabinet and resetting the jumper.
Posted on Feb 02, 2010
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Posted on Jan 02, 2017
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Oct 04, 2013 | Computers & Internet
Reset the password on any HP laptop.
Reset the BIOS password on an HP laptop computer when it has been forgotten or when preparing the laptop for sale to a new owner. Learn how to erase an unknown BIOS password by physically disconnecting the internal batteries. Avoid spending hundreds of dollars at a service center to make changes that can often be performed at home by anyone with the ability to take an HP laptop apart and put it back together again.
Power down the computer if necessary by holding the power button down for six seconds until the power shuts off.
Disconnect the power cord from the HP laptop computer. Remove the battery by flipping the computer over onto its cover and releasing the battery clips as indicated by the illustrations on the bottom of the laptop or in the owner's manual. Lift the edge of the battery nearest the clips up first, then pull the battery out of the laptop.
Remove the screws that hold the hard drive cover in place and remove the cover. Take the hard drive out of the laptop by removing the two retaining screws and pulling the drive gently away from the connector, then lifting the hard drive bracket or tray out of the computer.
Remove the screws that hold the memory compartment cover in place, then remove the cover. Remove the memory modules from the sockets by spreading the metal retaining clips gently apart and allowing the module to spring upward. Pull the memory straight out of the socket at the angle it rests at when sprung from the retaining clips.
Remove the Real Time Clock (RTC) coin cell battery from the memory compartment by pressing the retaining clip and pulling the coin cell battery out of the socket.
Allow the computer to sit without the battery for an hour, then reinstall the memory and hard drive, but leave the coin cell battery and the main battery out of the system. Connect the AC power adapter to the system and power it on to clear the BIOS password.
Power the system back down and remove the power cord to reinstall the coin cell battery and main battery.
hope this helps
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