"reqluq" said:
hi I tried to flash my bios form 1003 to 1006,I answered all the yes's,and
it started the procedure,but hung at a point and nothing I did would change
anything,so I shut down and restarted and now,I can see and hear it
accessing the boot floppy but no visual,is it time for a new mb or is this
salvagable?
thanks
req
Was the file you tried to flash exactly 256KB in size ?
AS331006.AWD 262,144 bytes
You have to be careful with decompression tools, as some
of them will actually decompress one of the modules inside
the BIOS file and dump that into your working directory.
If you grab that file by accident, there will be trouble.
If you cannot get it to recover, go to
www.badflash.com
and get another flash chip. As long as the flash chip in
the lower left hand corner of the board is situated in
a socket, it can be removed, and a properly programmed
replacement put in its place.
This page shows a fancy tool for removing a PLCC (four sided)
flash chip. The two metal legs have a lip on the end, that
grips (diagonally) underneath the chip as you pull it out.
The only advantage of the tool, is it helps prevent the legs
of the chip, or the contacts in the socket, from getting bent.
I have removed many of these, with a sharp pointed tool, so
a chip puller is not essential unless you are "all thumbs".
If you use this tool, you won't need quite as much clearance
around the socket, to get at the chip (so perhaps you can
pull the chip out, without removing the motherboard from
the computer case):
http://www.radioshack.com/product.asp?cookie_test=1&catalog_name=CTLG&product_id=276-2101
Take note of the orientation of the chip, _before_ removal.
There should be a triangle on the socket, and that marks
pin 1. There should be a dot on the chip marking pin 1.
Make sure the new chip is face up, and turned the same
way as the old one, before reinserting. There is no
insertion tool - just press it into place with your thumb,
pressing equally on all sides as you push it into place.
The printed circuit board should really be supported, any
time you are pressing on it - but since there is a
standoff right next to the chip, you shouldn't need to remove
the motherboard to insert the new chip.
As always, unplug the computer before working inside it. Use
an antistatic wrist strap or other means, to bring your body
to the same electrical potential as the chassis of the computer.
This will help prevent damage to the new flash chip, which
should have been packaged in antistatic material by "badflash".
Paul
