G
Guest
Is it possible to fix the BIOS if something goes wrong after you've made a
manual BIOS change?
manual BIOS change?
P
Pegasus \(MVP\)
Justin said:
Not a Windows question - ask a hardware newsgroup.
J
John
Justin said:
Give us more info. What did you change?
John.
D
Detlev Dreyer
Justin said:
Undo that change or select the option "Reset to Factory Default" (or
similar). Not a Windows issue anyway.
D
dobey
Justin said:
Not an XP question as others have said, but by "manual" change, I assume you
mean you have entered the BIOS and changed a setting, (or want to)?
If you do this and the PC won't boot you can reset the CMOS, (which is where
the BIOS information is kept).
Usually by moving a jumper on the motherboard for a minute or so, (see your
manual), or sometimes by switching the power to the motherboard on and off
several times, depending on the manufacturer. This needs to be done from the
PSU, or from the wall if your PSU doesn't have it's own power switch. Again
you need to check the manual or appropriate news group to see if your
motherboard supports this.
PS. The BIOS isn't "broken", it usually means your hardware doesn't support
the settings you have used.
Off hand about the only dangerous thing you could do in the BIOS is to set
the voltages too high, so make sure you read up on the hazards of BIOS
tweaking. Other changes might make your machine crash etc.
G
Guest
sometimes you can
remove the cmos
battery from the
motherboard for maybe
20 minutes or so.
reinstalling usually resets
the settings to their
defaults states.
also, those batteries
do not last a lifetime,
so it might be time to
replace it as well.
http://www.google.com/search?q=repl...-us:IE-Address&ie=UTF-8&oe=UTF-8&sourceid=ie7
--
..
remove the cmos
battery from the
motherboard for maybe
20 minutes or so.
reinstalling usually resets
the settings to their
defaults states.
also, those batteries
do not last a lifetime,
so it might be time to
replace it as well.
http://www.google.com/search?q=repl...-us:IE-Address&ie=UTF-8&oe=UTF-8&sourceid=ie7
--
db ·´¯`·.¸. said:
..
B
Bob I
Yes, of course, you may have to force a Clear CMOS and start all over
with your settings.
with your settings.
K
Ken Blake
Do you mean after changing one of the values, using the BIOS setup program?
Certainly. You can do it again just as you did it the first time.
Or do you mean after replacing the entire BIOS program with a newer version?
That depends on what you did wrong.
Also note that this is not a Windows question, and really doesn't belong
here. In the future, please ask questions in the appropriate newsgroup.
P
Pegasus \(MVP\)
No, not quite. The CMOS is a volatile memory chip. It looks
after things such as the hard disk type, the power-up settings
and the clock. It loses its information the moment you remove
the motherboard battery.
The BIOS chip, on the other hand, is a read-only memory.
It retains its information even when the battery is removed.
Clearing it is not only impossible but quite undesirable: You
would lose the ability to read the screen and use the keyboard.
That's why it's called "Basic Input/Output System". A BIOS
can be upgraded, but only with a special program supplied
by the BIOS manufacturer.
after things such as the hard disk type, the power-up settings
and the clock. It loses its information the moment you remove
the motherboard battery.
The BIOS chip, on the other hand, is a read-only memory.
It retains its information even when the battery is removed.
Clearing it is not only impossible but quite undesirable: You
would lose the ability to read the screen and use the keyboard.
That's why it's called "Basic Input/Output System". A BIOS
can be upgraded, but only with a special program supplied
by the BIOS manufacturer.
B
Bob I
The way the question was worded, I believed the OP was actually
referring to the CMOS, and answered according. Or did you mean to reply
to the OP?
referring to the CMOS, and answered according. Or did you mean to reply
to the OP?
P
Pegasus \(MVP\)
My reply was to you, not to the OP.
The OP said "BIOS" in his Subject line, then two more
times in his post. But perhaps he meant "CMOS" all
along - who knows? If I had this suspicion then I would
prompt him to confirm whether he meant BIOS or CMOS.
The OP said "BIOS" in his Subject line, then two more
times in his post. But perhaps he meant "CMOS" all
along - who knows? If I had this suspicion then I would
prompt him to confirm whether he meant BIOS or CMOS.
L
Lil' Dave
Please reword the question in exactly what the cause was with some more
detail. To my knowledge, I've never made a "manual bios change" as I've
never went that far. Maybe you meant something else.
Dave
detail. To my knowledge, I've never made a "manual bios change" as I've
never went that far. Maybe you meant something else.
Dave
P
Plato
=?Utf-8?B?SnVzdGlu?= said:
One can always easily use a simple file to set the bios to defaults.
G
Greg Rozelle
Not what I been told by a computer tech.
It will reset all the cmos settings back to the factory default by
removing the battery.
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M
Mark F.
Pegasus (MVP) said:
Yes and no. The BIOS chip (current technology) is "Flash" memory which means
that you can rewrite the bios software using a flash utility program (from
the manufacturer). It's ROM in the sense that the code cannot be changed
without flash software. Recommended only in extreme cases.
U
Uncle Grumpy
Greg Rozelle said:
Your info is incorrect. When one upgrades a computer's BIOS, THAT
upgrade becomes the factory default.
G
Greg Rozelle
(Sorry If duplicate)
Yes & NO
If he just screwed up a setting in the CMOS, that removing the
battery would fix the problem.
However, if he used the wrong flash or the correct flash and it didn't
work. The other options would to reflash with the back up he made or
take it a computer shop and have them use a machine to reflash it.
Greg Rozelle
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Yes & NO
If he just screwed up a setting in the CMOS, that removing the
battery would fix the problem.
However, if he used the wrong flash or the correct flash and it didn't
work. The other options would to reflash with the back up he made or
take it a computer shop and have them use a machine to reflash it.
Greg Rozelle
========Signature Line=========
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U
Uncle Grumpy
Greg Rozelle said:
The subject under discussion was a BIOS UPGRADE.
WTF has that got to do with changing a setting in the CMOS!?
Screwing up an upgrade to the BIOS is a catastrophic event.
W
WaIIy
Your reading comprehension isn't too good today.
P
PowerUser
He's probably in a situation where he can't/doesn't have enough time to even
navigate to the BIOS defaults screen before sh*T starts to happen.
Overclockers must be careful. It can be rewarding but it must be done in
the right way to get brag rights.
I have seen bioses that automatically change back certain values if things
don't work. But it's not always that way.
navigate to the BIOS defaults screen before sh*T starts to happen.
Overclockers must be careful. It can be rewarding but it must be done in
the right way to get brag rights.
I have seen bioses that automatically change back certain values if things
don't work. But it's not always that way.