CMOS checksum fails

On Tue, 05 May 2015 13:29:30 -0400, Bill
wrote:

DecadentLinuxUserNumeroUno wrote:
I would suggest taking an electronics course, but that too is miles
above your brain grade.

Fact: The vast majority of college students have no idea how a
flashlight works. The concept of "circuit" is not familiar to them.

'Flashlight' is an app on your smartphone. It works using servers and
app stores and for some reason wants to know your location.

--
Spehro Pefhany

In article ,
what says...

On Tue, 05 May 2015 13:29:30 -0400, Bill
wrote:

DecadentLinuxUserNumeroUno wrote:
I would suggest taking an electronics course, but that too is miles
above your brain grade.

Fact: The vast majority of college students have no idea how a
flashlight works. The concept of "circuit" is not familiar to them.

'Flashlight' is an app on your smartphone. It works using servers and
app stores and for some reason wants to know your location.


Because it wants to be smarter !

Jamie

In article , DLU1
@DecadentLinuxUser.org says...

On Tue, 5 May 2015 11:55:03 +0200, "Skybuck Flying"
Gave us:

So this motherboard has had power for 3 years almost non-stop, that's why I
am a little bit surprised that the battery might be dead.


You are a true idiot. Go **** and moan in a children's group.

Was that an invite to a private party of yours?

Jamie

On Tue, 5 May 2015 17:27:54 -0400, M Philbrook
Gave us:

In article , DLU1
says...

On Tue, 5 May 2015 11:55:03 +0200, "Skybuck Flying"
Gave us:

So this motherboard has had power for 3 years almost non-stop, that's why I
am a little bit surprised that the battery might be dead.


You are a true idiot. Go **** and moan in a children's group.

Was that an invite to a private party of yours?

Jamie


As George Carlin would say... blow it out your ass.

M Philbrook wrote:
In article ,
what says...
On Tue, 05 May 2015 13:29:30 -0400, Bill
wrote:

DecadentLinuxUserNumeroUno wrote:
I would suggest taking an electronics course, but that too is miles
above your brain grade.
Fact: The vast majority of college students have no idea how a
flashlight works. The concept of "circuit" is not familiar to them.
'Flashlight' is an app on your smartphone. It works using servers and
app stores and for some reason wants to know your location.

Because it wants to be smarter !

Jamie

How can it shine the light on you if it doesn't know where you are?

krw wrote:
On Tue, 5 May 2015 20:31:48 +0530, "Pimpom"
wrote:

"David Eather" wrote in message
news
On Tue, 05 May 2015 09:17:12 +1000, David Eather
wrote:

On Mon, 04 May 2015 21:45:43 +1000, Pimpom
wrote:

"Rod Pemberton" wrote in message
newsp.xx3xr8t5wa0t4m@localhost...
On Sun, 03 May 2015 21:26:48 -0400, Skybuck Flying
wrote:

I guess it's battery:

[link]

Kinda weird... it seems to keep some settings but maybe
that's
not true.
Those are probably default BIOS settings.

The clock/date is reset to 2005 causing weird problems in
windows
and apps which is easily solved.

So I guess that's a clear symptom that battery might be
dead.

I ll try replacing it sometime in future perhaps and see if
that
solves it.
The battery might not need replacing. If the motherboard
hasn't been
used in a long time, the battery may simply need recharging.
You can
do this by powering the board for a few hours, and then
using
it daily
for a week or so. Then, don't use the motherboard for a
month
or so.
If the settings are lost after a month without use, replace
the
battery.

I'm afraid I have to disagree. Motherboards use primary
(non-rechargeable) CR2032 batteries. As with most primary
batteries, they may partially recover when they are left
unloaded. This is what happens when the computer is turned on
and
the power supply takes over the job of supplying the tiny
amount
of power needed to retain the BIOS settings. This is why a
CMOS
battery actually lasts longer if the computer is in regular
use.

That said, it is often possible to rejuvenate a primary cell
to
some extent by charging it, but it's not as good as
recharging a
secondary cell And the practice is often discouraged because
it
can produce undesireable consequences, even to the extent of
exploding.


I have seen both used on motherboards. But the rechargeable is
normally a small stack of 3 x 1.2v NiCd. After a few years
they tend to leak and ruin the main board shortly after that.
Just thinking it's been many years since Ive seen one - it was
a 386 or maybe 486
I saw some of those in the Pentium era too but they were in the
minority even then. I didn't mention them earlier to avoid
clutter. I also came across some mobos that had no battery
visible anywhere. They kept time and retained BIOS settings, so
the battery was no doubt inside the boxy RTC module.

Yeah, Dallas Semiconductor had a bunch of RTCs with the battery built
in. Dallas had some nice stuff but was eaten by Maxim.

The Dallas provided home projects for people...
when the battery ran out. One of the few chances
to use a Dremel for fun and profit, inside your PC case :-)

http://www.mcamafia.de/mcapage0/dsrework.htm

Paul

On Tue, 5 May 2015 17:26:53 -0400, M Philbrook
wrote:

In article ,
says...

On Tue, 05 May 2015 13:29:30 -0400, Bill
wrote:

DecadentLinuxUserNumeroUno wrote:
I would suggest taking an electronics course, but that too is miles
above your brain grade.

Fact: The vast majority of college students have no idea how a
flashlight works. The concept of "circuit" is not familiar to them.

'Flashlight' is an app on your smartphone. It works using servers and
app stores and for some reason wants to know your location.


Because it wants to be smarter !

It's already bright enough to get the job done.

On 2015-05-05, JW wrote:
On Tue, 05 May 2015 10:48:36 +1000 "David Eather"
wrote in Message id: :

On Tue, 05 May 2015 09:17:12 +1000, David Eather wrote:

On Mon, 04 May 2015 21:45:43 +1000, Pimpom
wrote:


"Rod Pemberton" wrote in message
newsp.xx3xr8t5wa0t4m@localhost...
On Sun, 03 May 2015 21:26:48 -0400, Skybuck Flying
wrote:

I guess it's battery:

[link]

Kinda weird... it seems to keep some settings but maybe that's
not true.

Those are probably default BIOS settings.

The clock/date is reset to 2005 causing weird problems in
windows
and apps which is easily solved.

So I guess that's a clear symptom that battery might be dead.

I ll try replacing it sometime in future perhaps and see if
that
solves it.

The battery might not need replacing. If the motherboard
hasn't been
used in a long time, the battery may simply need recharging.
You can
do this by powering the board for a few hours, and then using
it daily
for a week or so. Then, don't use the motherboard for a month
or so.
If the settings are lost after a month without use, replace the
battery.

I'm afraid I have to disagree. Motherboards use primary
(non-rechargeable) CR2032 batteries. As with most primary
batteries, they may partially recover when they are left
unloaded. This is what happens when the computer is turned on and
the power supply takes over the job of supplying the tiny amount
of power needed to retain the BIOS settings. This is why a CMOS
battery actually lasts longer if the computer is in regular use.

That said, it is often possible to rejuvenate a primary cell to
some extent by charging it, but it's not as good as recharging a
secondary cell And the practice is often discouraged because it
can produce undesireable consequences, even to the extent of
exploding.



I have seen both used on motherboards. But the rechargeable is normally
a small stack of 3 x 1.2v NiCd. After a few years they tend to leak and
ruin the main board shortly after that.

Just thinking it's been many years since Ive seen one - it was a 386 or
maybe 486

That is true. Around the era of the first socket 5 and socket 7 Pentiums,
many motherboards went to encapsulated NVRAM devices with a built in
clocks from the likes of Dallas/Maxim. In the Pentium 2 and Pentium 3 era
most went to CR2032 coin cells.

Prior to that IBM used them in the PS/2

--
umop apisdn

Today, 16 may 2015 I cleaned my Dream PC from 2006.

It was necessary, the little fan on the motherboard was making noise.

I also recorded some videos to film the dust.

Ammount of dust was pretty huge.

I used vaccuum cleaner to suck out most of it.

I also blew myself across the motherboard to blow out hidden dust cloths and
stuff.

I noticed there was quite a large build up of dust around and on the
battery.

So my theory/hypothesis that the dust short-circuited the battery migh thave
some merit.

For now I have some explanations:

1. Dust caused short-circuit.

2. Placing the battery I touched both sides reducing some of it's charge.

3. I took the battery from another motherboard and it was already drained
somewhat.

Anyway.

After cleaning I booted and booted again and I kinda noticed again checksum
failure or something.

So I think the battery is dead.

So I have replaced the cmos/bios battery with a new one which I had lieing
around for a while.

It was still packed up so I am sure it's not used.

The battery is of the brand: VARTA

It has a date on it: july 2022.

So I think this means the battery will have charged in the package until
2022 or so ?

Anyway I assume this will now fix the CMOS error... I like to keep my system
in good shape and this cleaning was a nice oppertunity to replace it.

I also noticed PCIE express clock was set at 100 MHZ... I might have to
increase that to 133 MHZ... I am not yet sure what my motherboard's and
graphics card speed is...

Might have to look into that...

CR2032 battery type so it's compatible.

If this battery replacement does not solve CMOS checksum error next time my
system boots from a hard reset/power down/power up cycle... I'll let you
guys know !

For now I will consider this problem solved.

Also there was quite a lot of dust inside the PC in hidden places... also
lot's of it in power supply... there might still be some.

So lot's of potentials for tiny short circuits.

Hopefully this has now been solved ! =D

Something weird did happen on sleep... the monitor went black... and it took
a few minutes before it slept... but I guess windows might have been
updating something.. or my pc was still booting a bit or something... but
eventually it slept... fortunately I had the patience to wait for it, I had
a feeling it would sleep properly

I also used a little dust hanky/cloth to wipe out dust from harddisks and
harddisks bays... lot's of dust was there...

I also used a little screw driver to poke between the fences and suck dust
from fan blades.

I think in total it cost me 18:00 - 15:30 = 2 hours and 30 mins to clean
this sucker !

I also cleaned the little motherboard fan with ear sticks... soap water, and
eventually oiled it.

Also cleaned doors.

And it's still just a somewhat "rough job"... most important was sucking
away all the dust cloth from the Scythe Ninja CPU cooler.. it was full on
the front... and a little bit on the back.

This should go a long way to keeping my CPU much cooler... now and in the
coming summer

But this does prove... how much mother ****ing work it is to clean a sucker
like this... work I'd rather not do lol.

If I had to clean it even more thoroughly... it might take 5 hours or
more... to descrew the whole sucker and re-wire, opening stuff up like power
supply etc.

Didn't do that this time... to save many hours of work.

This time I also used vaccuum cleaner might it a hell lot easier... might
have taken a bit more time... but still it was kinda relaxing to suck all
that stuff out =D

The ammount of dust that came out of it is just amazing.

I have a cleaning lady since a few weeks... my appartment much more clean...
hopefully that will help/benefit my PC to keep it more clean too.

I am gonna get this short now... basically done with this story... I need a
good shower anyway hahaha lol.

I am just glad... I didn't end up... blowing out dust on my balkony with the
PC in my hand like some mother****ing moron... about to drop his PC or
something lol.

Or harddisk... I did do that in the past... didn't drop em... but still..
the risk is pretty huge/big to do that... didn't do that this time... so I
am glad/happy for now.

I just hope no fans start to make noises... I did clean my PC a while ago...
1, 2, 3 years can't remember... I pulled apart everything and oiled every
god damn fan... so that oil is still kicking in and it will go a long way I
think to keep this spinning smooth.

Only the little fan was really dirty and needed new oil.

It apperently spins at 7000+ RPM... I guess that having spinning makes it
oil evaporate much sooner than the bigger ones ! ; ) =D

Bye for now,
Skybuck.

Skybuck Flying wrote:
Today, 16 may 2015 I cleaned my Dream PC from 2006.
* How can a dream collect dust?


It was necessary, the little fan on the motherboard was making noise.
* Noise from a dream...snore less.


I also recorded some videos to film the dust.

Ammount of dust was pretty huge.

I used vaccuum cleaner to suck out most of it.

I also blew myself across the motherboard to blow out hidden dust cloths
and stuff.
* As long as you did not land on the motherboard in the dream..


I noticed there was quite a large build up of dust around and on the
battery.

So my theory/hypothesis that the dust short-circuited the battery migh
thave some merit.
* NOPE.


For now I have some explanations:

1. Dust caused short-circuit.
* NOPE.


2. Placing the battery I touched both sides reducing some of it's charge.
* ONLY if your skin resistance is VERY low..in which case a car battery
could kill you (which actually happened).


3. I took the battery from another motherboard and it was already
drained somewhat.

Anyway.

After cleaning I booted and booted again and I kinda noticed again
checksum failure or something.

So I think the battery is dead.

So I have replaced the cmos/bios battery with a new one which I had
lieing around for a while.

It was still packed up so I am sure it's not used.

The battery is of the brand: VARTA

It has a date on it: july 2022.

So I think this means the battery will have charged in the package until
2022 or so ?
* You are NUTS (so what else is new?) . . NO WAY I HELL can a battery
GAIN charge inside a retail package.


Anyway I assume this will now fix the CMOS error... I like to keep my
system in good shape and this cleaning was a nice oppertunity to replace
it.

I also noticed PCIE express clock was set at 100 MHZ... I might have to
increase that to 133 MHZ... I am not yet sure what my motherboard's and
graphics card speed is...

Might have to look into that...

CR2032 battery type so it's compatible.

If this battery replacement does not solve CMOS checksum error next time
my system boots from a hard reset/power down/power up cycle... I'll let
you guys know !

For now I will consider this problem solved.

Also there was quite a lot of dust inside the PC in hidden places...
also lot's of it in power supply... there might still be some.

So lot's of potentials for tiny short circuits.
* NOPE.


Hopefully this has now been solved ! =D

Something weird did happen on sleep... the monitor went black... and it
took a few minutes before it slept... but I guess windows might have
been updating something.. or my pc was still booting a bit or
something... but eventually it slept... fortunately I had the patience
to wait for it, I had a feeling it would sleep properly

I also used a little dust hanky/cloth to wipe out dust from harddisks
and harddisks bays... lot's of dust was there...

I also used a little screw driver to poke between the fences and suck
dust from fan blades.

I think in total it cost me 18:00 - 15:30 = 2 hours and 30 mins to clean
this sucker !

I also cleaned the little motherboard fan with ear sticks... soap water,
and eventually oiled it.

Also cleaned doors.
* And not the windows?


And it's still just a somewhat "rough job"... most important was sucking
away all the dust cloth from the Scythe Ninja CPU cooler.. it was full
on the front... and a little bit on the back.

This should go a long way to keeping my CPU much cooler... now and in
the coming summer

But this does prove... how much mother ****ing work it is to clean a
sucker like this... work I'd rather not do lol.

If I had to clean it even more thoroughly... it might take 5 hours or
more... to descrew the whole sucker and re-wire, opening stuff up like
power supply etc.

Didn't do that this time... to save many hours of work.

This time I also used vaccuum cleaner might it a hell lot easier...
might have taken a bit more time... but still it was kinda relaxing to
suck all that stuff out =D

The ammount of dust that came out of it is just amazing.

I have a cleaning lady since a few weeks... my appartment much more
clean... hopefully that will help/benefit my PC to keep it more clean too.

I am gonna get this short now... basically done with this story... I
need a good shower anyway hahaha lol.

I am just glad... I didn't end up... blowing out dust on my balkony with
the PC in my hand like some mother****ing moron... about to drop his PC
or something lol.

Or harddisk... I did do that in the past... didn't drop em... but
still.. the risk is pretty huge/big to do that... didn't do that this
time... so I am glad/happy for now.

I just hope no fans start to make noises... I did clean my PC a while
ago... 1, 2, 3 years can't remember... I pulled apart everything and
oiled every god damn fan... so that oil is still kicking in and it will
go a long way I think to keep this spinning smooth.

Only the little fan was really dirty and needed new oil.
* Which can gum up the bearings (if any).


It apperently spins at 7000+ RPM... I guess that having spinning makes
it oil evaporate much sooner than the bigger ones ! ; ) =D

Bye for now,
Skybuck.