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| FDISK Certified Tech | There are 2 ways you can reset your bios. 1. On the motherboard there is a small watch battery. Remove this battery along with the power cable from the power supply. Hold down the power button to fully discharge the system. Wait 2-3 minutes then reinstall the battery and plug in your system. Your reset is now complete 2. Some motherboards have a 3 pin jumper by the battery. Lets say that the jumper is on pins 2 and 3. Remove the jumper while the machine is OFF and place onto pins 1 and 2. Power on your machine for a minute. (Note: Your system will not POST). Shutdown your machine and put the jumper back to pins 2 and 3. Your reset is now complete This is a great troubleshooting step for those of you having POST issues or no POSTing at all. Like other troubleshooting steps, this will not always work but usually will depending on the problem. I am not responsible for any damage that my advice may cause. Use this information at your own risk.
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| Super Moderator Join Date: May 2005 Location: Locked in a dungeon, Perth
Posts: 7,778
| hmmm i see i'm not the only one whos sick of answering how to reset CMOS. could a mod please sticky this.
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| True Techie Join Date: Dec 2005
Posts: 182
| nitestick... I believe they are presently working on articles like this so posters can read them before making 'Redundant' posts. Of course as we know...... a lot of new posters won't read them. Shawn.... step#2. MY MANUAL says: "Do not power-on with the jumper in the 'clear position', you may damage the board." Since the battery is the power source for the Cmos/Bios..... there is no need for main power to be on......... @ MSI
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| FDISK Certified Tech | Quote:
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| Insane Executioner | I know someone already mentioned it. but Its resetting the CMOS not BIOS... Lol.
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| Lord Techie | You dont have to power on your machine, all i do is move from 1-2 to 2-3 for 10 seconds then move it back to 1-2 and CMOS is clear but my computer boots up even if i set my CPU at 4.0Ghz it just wont past the verifying DMI pool data and backup the cmos ![]()
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| True Techie Join Date: Dec 2005
Posts: 182
| PZ..... Thank you......... Shawn..... Just because you didn't kill your 'mobo', doesn't mean the process is correct; you may have damaged ICs within the CMOS that you don't know about....... yet! The normal jumper positions are 1-2, not 2- 3. * MSI probably just put that 'Warning" in their manuals just to scare everybody......... FWIW.... Ste.... You are 'clearing the CMOS and 'resetting the BIOS' http://www.tyan.com/support/html/clear_CMOS.html
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| | #10 (permalink) |
| Pure American Metal Join Date: Feb 2005 Location: Trotters Walk-In Closet
Posts: 3,438
| The CMOS is special memory where your BIOS settings are stored. The CMOS battery is a back-up power source when the PC is turned off. Removing this battery when the PC is off, results in the clearing of settings in this special memory (CMOS). Those settings will reverted back to default. The reason you remove the battery for a extended period of time is due to the Motherboard & CMOS's ability to retain a charge. By waiting a period of time (10 seconds to whatever) you ensure that all electrical charges will be dissipated. Then the CMOS will no longer retain your saved settings - BIOS reverting back to default. The CMOS Clear Jumper is basically a CMOS battery Bypass. Change the PINS and the battery no longer powers the CMOS. The waiting period still applies. "The only time you want to use "CMOS Battery removal or CMOS Clear" is when you have made changes to your BIOS's settings and are unable to boot or re-access your BIOS." i.e (Overclocking or incorrect settings)." |
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