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Plavix
11-01-2004, 02:16 AM
Hi there Guys!

Can anyone tell me how to replace a bios chip?
DFI have sent me two spare bios chips but they look diferent to the one installed on the board which is corrupted due to overclocking? They are also sending another replacement.
1. Should the bios chips look diferent (sticker)
2. If I do change to the one DFI sent does it need something doing to it to make it boot(DFI sent bios for the board I have, I presume?) install a bios bin file to chip?????
If so how?
3. To change the bios is it a simple case of remove carefully with no power obviously!
do I remove cmos battery also, there is ways to change bios chips cos you read about it on the forum

If anyone can help please do :bow:

Thankyou

Plavix

BB_One
11-01-2004, 06:32 AM
Hello plavix,

Look different? look closely the bios on the motherboard is positionned in a SOCKET, hence might look larger and thicker ~ u must remove it from it's socket. The socket must remain in place so make sure not to use excessive force.

Replacing the bios does mean making sure all source of power to the board needs to be removed. So make sure power supply atx connector removed, also unplug the power supply from the wall. Remove the battery from the motherboard.

And take extreme precaution to GROUND yourself for a few seconds prior to touching the bios chip in order to remove any possible static electricity from our body.


remove old bios and place new one avoid touching the pins mating to the connector, pay attention to the way it connects to the socket, there is a mark to show pin 1 and must match with pin 1 on the socket. When u are sure of the direction, gently press evenly to put the bios in place.

Once done, reconnect battery, connector and power supply cord and boot. If you need to reflash follow that topic on the dfistreet forum very well explain. Or come back here if required.

Take a quick look here, and as they state in there.....go easy...firm action but with tender care...

http://www.hardwareanalysis.com/content/editorials/article/1672.6/



Have fun.

Electric Bill
11-02-2004, 03:47 PM
Here is a picture of a BIOS chip in its socket. This particular one is from my DFI NF2 Ultra B. The tywrap is around the socket because the chip has been removed and reinstalled at least a hundred times and the socket is cracked.

http://ebill.home.att.net/NFIIB/PA132890.jpg

If you look closely you'll notice that the upper right corner of the chip has a bevel that matches the bevel in the socket. Make sure that you install it the same way. If you got the new chip from DFI it should already have the latest BIOS on it so you can just use a hook shaped tool in the upper left or lower right corner to remove it. Some people use a dental pic or you can go to Radio Shack and buy a PLCC Extraction tool #276-2101. I use the RS tool but I just use one hook and pull straight out to avoid cracking the socket like the one in the photo. BTW you can remove the chip with the computer running in DOS or Windows but its not generally recommended. This is called hot flashing and its usually done to flash a BIOS on a chip that has a corrupted BIOS. You actually could start your computer with the new chip in place then boot into DOS and pull the good chip and replace it with the corrupted chip. Then you flash a new BIOS onto the corrupted chip. You can also do this in Windows with Winflash. I have also hot flashed a corrupted DFI chip on my Abit AN7 with Winflash.
Bill