Did you put a password to the BIOS and forgotten, and now can not access the PC?
If so, in this article we will see a method for, among other things, to eliminate the application of this password at the beginning of PC (Not to be confused with the logon password that can occur after the appearance of the logo Windows)
To begin you must know the password start is contained in a nonvolatile memory, Ie retains data even if the PC is turned off. This chip is in the motherboard and is commonly called BIOS. The solution is to reset the BIOS. To do this, there are three methods:
Reset the BIOS on desktop PCs
The steps discussed below are intended to reset the BIOS to clear any passwords you may have had in memory. Resetting can also serve to put in correct state in case of system failure. The reset is accomplished by removing a jumper from the motherboard. Here, the hardest part is finding the jumper.
Note: This procedure also resets other parameters of the BIOS, so if you made any changes, they will be lost and you must reconfigure the BIOS.
- Step 1: Open housing PC, being sure after switching it off and disconnected cable supply. Touch the metal chassis of the housing so that you download from static electricity.
- Step 2: Check your motherboard documentation to locate the position of the jumper that allows you to restore the BIOS. If you do not have the documentation, look at the board one of the following statements: CLR BIOS, BIOS CLEAR, CLR CMOSCLEAR CMOS RESET RESET BIOS or CMOS. In general, the jumper is located near the battery, type button on the motherboard. Write the name of the jumper associated with registration. In our example, this is the jumper JP4
- Step 3: Found in the backplane jumper to reset. This is also near the battery.
- If the jumper is on a connector 3-pin, place it on the middle pin and the pin initially uncovered (moving from the position pin1-pin2 to pin2-pin3, or vice versa). Wait a few seconds then put the jumper back to its original position (pin1, pin2).
- If the jumper is on a 2-pin connector and is only mounted on a single pin, place it on the two, wait a few seconds then put it in its original position.
- Step 4: Reconnect the power cable to housing and starts the PC: the password will be gone.
Reset the BIOS on Laptop PCs
In some models, to reset the BIOS, just remove the battery and maintain your start button down / off for 5 seconds.
Using a software reset
If the password is only requested in the setup In some motherboards can recover it without having to perform all the operations described above.
CmosPwd software download (freeware)
http://www.cgsecurity.org/cmospwd.html
This program works with the following BIOS:
- ACER / IBM BIOS
- AMI BIOS
- WinBIOS AMI 2.5
- 4.5x/4.6x/6.0 Award
- Compaq (1992)
- Compaq (New version)
- IBM (PS / 2, Activa, Thinkpad)
- Packard Bell
- 1.00.09.AC0 Phoenix (1994), A486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev 1.13.1107
- Phoenix 4 release 6 (User)
- Gateway Solo - Phoenix 4.0 release 6
- Toshiba
- Zenith AMI
