Question about Dell Latitude C840 Notebook

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How to reset bios of my dell latitude c840????

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I've had to do this before. Call up Dell tech support and assuming you can provide proof of ownership then they'll give you the reset code based on what's on the screen when you try to log in to the BIOS.This is the best way to solve that issue.

Even if you cannot prove purchase proof they will give you a reset code. Just contact them removing battery and other suggestions will not work it is a dedicated BIOS on a separate chip. I hope that this gets you pointed in the right direction. Just go to Dell.com Thanks for using FixYa! John

Posted on Apr 07, 2011

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Dell Latitude C840, Model # PP01X Express Service Code # 8716503349 Service Tag # 40KX11


1. please press F2 into the BIOS setting menu during power up
2. press "ALT+F" to restore factory default
3. press "ESC" and save the change

Apr 22, 2015 | Dell Computers & Internet

1 Answer

Sound drivers doesn't work after reseting on dell latitude c840


keep updating windows to sp3 then reinstall sound driver

Dec 23, 2012 | Dell Latitude C840 Notebook

2 Answers

BIOS password for Dell latitude C840 (6907P0J)


Hi,

BIOS password is user initiated. To be straight forward with you and for you not to have false hope, there is no way we can obtain nor reset the BIOS password not unles we know what it is. Now, the solution to this issue is to replace the computer's motherboard.

Thank you for choosing FixYa!

Apr 26, 2011 | Dell Latitude C840 Notebook

1 Answer

Optical drive not recognized in Bios


You have either a bad optical drive or optical port. You can still load the OS but you need to make a bootable USB drive and install that way. Or get and use an external USB optical.

also, check in your bios or for the drive settings, it may be set to only accept sata drives or the port may be disabled. some latitudes give the ability to disable or not look at a specific port.

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1 Answer

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was it new ram you bought or was it out of some other machine because it might be a caes of bad ram. try your old ram in the laptop and see if it boots up if so then get your ram chaged.

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3 Answers

Reset password bios c840 dell latitude


Remove the CMOS battery from the motherboard.

Jan 03, 2010 | Dell Latitude C840 Notebook

1 Answer

My Dell Latitude C840 works only with one memory module


Your motherboard is bad or there might be something in the slot preventing the memory from seating properly.Check if there is something in the slot preventing the memory from seatting properly.good luck

Sep 14, 2009 | Dell Latitude C840 Notebook

1 Answer

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maybe it is your Bios. what you should do is download a software call WINPHLASH, and try flash your Bios. are you could try and update your driver. by using driver detective.

May 31, 2009 | Dell Latitude C840 Notebook

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