![]() If you unplug the PC and remove the battery for 10-15 minutes, the CMOS may reset itself and the password should be blank. The CMOS settings on most systems are buffered by a small battery that is attached to the motherboard. If it has, turn the computer off and return the jumpers or dipswitches to its original position. Once you locate and rest the jumper switches, turn the computer on and check if the password has been cleared. Please remember to unplug your PC and use a grounding strip before reaching into your PC and touching the motherboard. On laptop computers, the dipswitches are usually found under the keyboard or within a compartment at the bottom of the laptop. Some manufacturers may label the jumper / dipswitch CLEAR - CLEAR CMOS - CLR - CLRPWD - PASSWD - PASSWORD - PWD. 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. The locations of these jumpers / dipswitches will vary depending on the motherboard manufacturer and ideally you should always refer to the motherboard or computer manufacturer's documentation. Many motherboards feature a set of jumpers or dipswitches that will clear the CMOS and wipe all of the custom settings including BIOS passwords. Using the Motherboard "Clear CMOS" Jumper or Dipswitch settings Also, since these utilities do not come from the manufacturer, use them cautiously and at your own risk. If your PC is locked with a BIOS administrator password that will not allow access to the floppy drive, these utilities may not work. The following software can be used to either crack or reset the BIOS on many chipsets. Press both mouse buttons repeatedly during the boot ![]() Most Toshiba laptops and some desktop systems will bypass the BIOS password if the left shift key is held down during boot OTHER BIOS PASSWORDS BY MANUFACTURER Manufacturer Read your manufacturers documentation for the BIOS setting before you begin typing in passwords WARNING: Some BIOS configurations will lock you out of the system completely if you type in an incorrect password more than 3 times. 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. Keep in mind that the key associated to "_" in the US keyboard corresponds to "?" in some European keyboards. These passwords are case sensitive, so you may wish to try a variety of combinations. Many BIOS manufacturers have provided backdoor passwords that can be used to access the BIOS setup in the event you have lost your password. If the supervisor password is reset without resetting the and hard drive as well, you will be unable to access the data on the drive. ![]() The exception to this are laptops, especially IBM Thinkpads, which silently lock the hard drive if the supervisor password is enabled. ![]() Please remember that most BIOS passwords do not protect the hard drive, so if you need to recover the data, simply remove the hard drive and install it in an identical system, or configure it as a slave drive in an existing system.
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