Re: Flash bios without CPU
- From: Paul <nospam@xxxxxxxxxx>
- Date: Thu, 25 Oct 2007 15:12:51 -0400
dropzone@xxxxxxxxxxx wrote:
Hi, my CPU recently fried and my P4C800 deluxe tells me: "system fail,
CPU test", so I'm buying a new CPU on ebay. The thing is, I saw that I
need to upgrade the bios to rev. 1016 in order to make the new CPU
work. How can I do that now that I don't have a CPU to flash my bios?
Is it possible to do it without CPU?
Or will the motherboard at least let me flash the bios with the new
CPU even if it's not sure what is the CPU?
(the new one is a Pentium 4 Extreme edition)
thanks
Marco
Your options would be:
1) Buy the cheapest processor known to be compatible with that motherboard.
Go to support.asus.com and look in CPUSupport for the list.
Install the cheap processor, then flash the BIOS. Remove cheap processor
and install expensive processor.
http://support.asus.com/cpusupport/cpu_support_right_master.aspx?type=1&name=P4C800%20Deluxe
2) Go to badflash.com or a similar BIOS chip seller, and order a replacement
BIOS chip. Badflash would need to find a new blank chip of the appropriate
size, and then they will flash it to 1016 or whatever version you specify.
Typically companies charge $25 for a new chip.
When the package arrives, you take a "chip puller", to remove the old
chip from the socket. Badflash is only an option if the BIOS is socketed
and removable. Some Gigabyte boards have the BIOS chip soldered right
to the motherboard, and so Badflash cannot help with those. You seat
the replacement chip with your thumb, and the following tool is only
used for "pulling" and not "pushing".
PLCC chip puller - or use a sharp pointed object to ease the chip out.
http://www.radioshack.com/product/index.jsp?productId=2062619
http://sp1.mm-a5.yimg.com/image/3141286323 (side view of a puller)
A tool with a sharp point, can also be used to ease the chip out,
alternating between diagonal corners of the chip. I've pulled a ton
of them, this way, without using the $10 tool. The proper tool helps
prevent damage to the chip being removed (and you may not really care
about that -- I used to reflash the removed chips, so I was careful
with them).
http://www.indiana.edu/~libpres/manual/tools/toolsimages/awl.jpg
3) There is a procedure called "hot flashing", where you take the BIOS chip
from your motherboard, and stuff it into another motherboard while the
power is on and the other board is booted into an OS. Effectively that
uses the second motherboard as an EEPROM flasher. A lot of things
have to go right, for this to work.
4) Find someone who owns an EEPROM programmer, and get them to do the flash
for you.
(3) and (4) are highly unlikely, and hardly worth me typing into messages
any more. But I mention them for completeness.
With regard to your whole premise, you got a "system failed CPU test",
but how do you know for sure, that it isn't the motherboard that is
fried ? That motherboard has an ICH5 family Southbridge chip, and the Southbridge
could have gone into latchup and burned. Check the motherboard and look
at the Southbridge for physical damage. Maybe you could try something
like this FSB400 Celeron as a cheap test chip ?
http://cgi.ebay.com/Intel-SL6VU-Celeron-2-40-GHz-Socket-478-CPU-400MHz-FSB_W0QQitemZ220163413639QQihZ012QQcategoryZ16180QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
This is what a burned ICH5 looks like.
http://onfinite.com/libraries/179057/2ea.jpg
Paul
.
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