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Reset default bios P4M800PRO

I've saved by mistake a bad configuration on my bios... and now my pc can't start. There is a method to restore to default the bios

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There is a clear cmos jumper by the cmos battery - check manual with link provided

Posted on Apr 13, 2014


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Posted on Jan 02, 2017

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SOURCE: p4m800pro-m4 don't start with pc2-6400u ddr2-400


Posted on Dec 24, 2008

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SOURCE: made changes in bios set-up; PC not starting; how to reset bios?

sound like you fried your processor sorry

Posted on Nov 16, 2009

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How to reset bios on a dell d035

When your computer first starts, press your bios access button(del, F10, F9, F1 are usual), and go to file/Reset bios to defaults. Save, and exit.
A couple of alternatives involve you opening your case, finding the bios reset jumper, and removing the jumper bridge from the 1-2 pin, and putting it on the 2-3 pin for a few seconds, to reset bios to factory defaults. Other method is to remove the motherboard battery for at least 5 minutes and then putting it back.
Hope that helps.

Apr 07, 2015 | Dell Computers & Internet

1 Answer

Xpsp sp3 qfe 130704 0421

There is a lot of info on Fixya website about this. Just Google search:
Xpsp sp3 qfe 130704 0421 I did not read through the responses, but if your problem is not among those addressed, try booting to safe mode, and see if you can correct the problem (F8 during post sequence). If you are unable to restore to an earlier Windows configuration that works (or if it still will not boot), I would suggest you reset bios to default (Press Del upon post, or F1 on some machines). Select default settings (listed differently for different bios configs), and follow directions (usually press F10 to save). I hope this helps you resolve your problem. Your problem could be OS (sometimes repaired by the first method), or bios config (repaired by the second method).

Mar 28, 2014 | Computers & Internet

1 Answer

I've been at this all day and still have'nt gotten my laptop to reset to a factory default setting. Can you please guide me through this process, step by step. Thankyou.

You can always restore the computer to a point when it was working fine.
For a laptop when you say factory defaults we've two things
1)Factory defaults on the Bios - as soon as u turn on the laptop we press F8 key or DEL(depends on the brand of the laptop) to get to the BIOS and you've an option to revert to the factory defaults.
It is advisable not touch the BIOS if you are not sure about this firmware
2)The operating system (lik windows xp,vista & 7) there is nothing called factory defaults for this all we've is a installation of the Operating system itself. However we can revert or restore back to last know good configuration mode.

How to start your computer by using the Last Known Good Configuration feature To start your computer by using the Last Known Good Configuration feature, follow these steps:
  1. Start your computer.
  2. When you see the "Please select the operating system to start" message, press the F8 key.
  3. When the Windows Advanced Options menu appears, use the ARROW keys to select Last Known Good Configuration (your most recent settings that worked), and then press ENTER.
  4. If you are running other operating systems on your computer, use the ARROW keys to select Microsoft Windows XP, and then press ENTER

Aug 18, 2011 | Computers & Internet

1 Answer

Can anybody tell me the location and/or board identifier of the bios chip on the motherboard for this model. I'm trying to clear out a password (the start-up kind) for a friend of mine, but I've...

some motherboards do have a pin/plug which can remove passworcs i would need to name and model number of the board to find the specifications Power off the computer and make sure that it is unplugged

Open up your computer case. You need physical access to the motherboard to complete this procedure

Find a circular, (mostly) silver metallic object on the motherboard. This is the CMOS battery

CAREFULLY remove the CMOS battery, avoid touching it with your fingers, and leave it out for about 120 seconds. This will flush the CMOS memory which stores the BIOS password and all other configuration. (See Warnings)

Set the battery back into place and power on the computer

The computer should then warn you that the CMOS configuration could not be found. You can either reconfigure it yourself or restore defaults. Restoring the default configuration should be fine.

You will notice that the BIOS password has been cleared and you can boot without it. You may reset the BIOS password to something else by going into the BIOS configuration and setting a new User Password (The Supervisor Password controls access to the BIOS, NOT the computer!)

Hope this helps

Jun 25, 2011 | Computers & Internet

2 Answers

What is the correct configuration for bios

Hi dianneruss56,
I see you are asking about the correct configuration of you system BIOS.
To set the BIOS on your Machine to what it was before you will just have to set it back to defaults.
Once in the BIOS page press F9 once the it should ask you if you want to go ahead and set it to defaults just click yes then press F10 to save and exit this should reset everything to defaults setting for you in your BIOS.
I hope this helps.

Jun 12, 2011 | E-Machines eMachines Desktop PC

1 Answer

How to cmos clear of dell model m1330

There are two ways you can restore the CMOS/BIOS back to the factory default.
First, turn off the laptop and remove the BIOS battery for 15 mins.
Insert the BIOS battery back again and go into the BIOS configuration to set the Date and Time etc.
Second, go into the BIOS configuration press the f1 or F2 or F10 key (not sure which key for your model DELL). When you get into the BIOS then there is a setting to restore the BIOS to the default, then save setting and exit.

Nov 19, 2009 | Dell XPS M1330 Laptop

1 Answer

Clear cmos

You can reset the BIOS back to the default setting by going into the BIOS configuration and there should be a setting "Load default settings" then save and exit.
The other way to reset the BIOS is to remove the BIOS battery, wait 1/2 hour, insert the battery, then go into the BIOS configuration and set the Date & Time etc.

Jul 02, 2009 | Toshiba Satellite A305-S6863 Laptop

2 Answers

Need to reset bios

Plese tell me what exactly what u did to upgrade the BIOS, if the BIOS is flashed wrongly, youy need to throw away your PC.

Apr 06, 2009 | Dell Dimension 4400 PC Desktop

2 Answers


tap f10 to enter the bios setup
first restore defaults then
go to device configurations and disable the Sata drive, save ur changes and see if u boot. just solved mine now.

Mar 24, 2009 | HP 530 Notebook PC

2 Answers

IBM pc won't go past logo screen.

at startup press f8 key and last known good configuration

Nov 02, 2008 | Computers & Internet

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