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Would UEFI with CSM enable cause power problem to Intel motherboards?



 
 
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  #1  
Old March 11th 17, 06:07 PM posted to alt.comp.hardware.pc-homebuilt
Mr. Man-wai Chang
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Posts: 697
Default Would UEFI with CSM enable cause power problem to Intel motherboards?


(CSM = compatibility support module)

Any known issues seen by anyone of you?

--
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/ v \ Simplicity is Beauty!
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  #2  
Old March 11th 17, 06:18 PM posted to alt.comp.hardware.pc-homebuilt
Mr. Man-wai Chang
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Default Would UEFI with CSM enable cause power problem to Intelmotherboards?

On 12/03/2017 1:07 AM, Mr. Man-wai Chang wrote:

(CSM = compatibility support module)

Any known issues seen by anyone of you?


It's an Asrock motherboard. Google found lots of results related to
power issues.

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
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  #3  
Old March 12th 17, 04:32 PM posted to alt.comp.hardware.pc-homebuilt
Mr. Man-wai Chang
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Posts: 697
Default Would UEFI with CSM enable cause power problem to Intelmotherboards?

On 12/03/2017 1:18 AM, Mr. Man-wai Chang wrote:
On 12/03/2017 1:07 AM, Mr. Man-wai Chang wrote:

(CSM = compatibility support module)

Any known issues seen by anyone of you?


It's an Asrock motherboard. Google found lots of results related to
power issues.


Never mind. After reassembling everything from scratch, it is working
again now. Not sure whether it got something to do with weather though
(humidity 95%-100%).

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
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  #4  
Old March 12th 17, 05:02 PM posted to alt.comp.hardware.pc-homebuilt
Paul[_28_]
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Posts: 1,467
Default Would UEFI with CSM enable cause power problem to Intel motherboards?

Mr. Man-wai Chang wrote:
On 12/03/2017 1:18 AM, Mr. Man-wai Chang wrote:
On 12/03/2017 1:07 AM, Mr. Man-wai Chang wrote:

(CSM = compatibility support module)

Any known issues seen by anyone of you?


It's an Asrock motherboard. Google found lots of results related to
power issues.


Never mind. After reassembling everything from scratch, it is working
again now. Not sure whether it got something to do with weather though
(humidity 95%-100%).


When you install an ATX motherboard:

1) Verify the PCI or PCI Express cards fit properly.
Plug a test card into Slot 1 and Slot 6 and check
for binding, or for the plugin card being bent or torqued
on insertion into its motherboard socket. You want
the cards to fit smoothly and not be under stress.
I had one computer case, where the alignment was
terrible!

2) The screws for the standoffs are generally dead center.
The position of the motherboard should not be allowed to
drift too far from dead center. Each screw thread in the
standoff, should be nicely centered in the mounting holes.
When you install a motherboard, you have to hold the
motherboard in place with one hand, while tightening the
screws with the other hand. The spring fingers near the
I/O plate area, tend to push the motherboard out of position.

Now, some computer cases are poorly made. But the ones
I've checked here, there is very little error on the location
of the holes.

If the motherboard is allowed to shift to one side, such
that the screws are not centered, sometimes the keepout zone
around the mounting hole is not large enough, and the mounting
screw can touch an electrical component.

On one Asus motherboard, you lose the right channel of the
audio, if the board is not mounted properly. When a customer
complained that their right audio channel was not working, the
Asus Tech Support knew right away what the root cause was.
Which means multiple customers had managed to short out
the audio right channel, using nothing but the mounting screw.

The mounting holes are *intended* to be at ground potential.
It is OK for the metal standoff of the computer case, to touch
the copper ring on the PCB. This is done on purpose for EMI control.
While some people advocate fitting "insulators" to the
holes, I do not believe in the practice. If the designer of
the motherboard did not want electrical contact, they could
easily have removed those copper pads. In a CAD tool, you can
call up "holes" with no copper around them. So if the motherboard
designer wanted the mounts insulated, it is real easy to do.
It's obviously "design intent" that the mounting points
be at electrical ground potential.

But that being said, you should not allow the motherboard to drift
too much, from dead center (as measured at each screw hole).

Paul
  #5  
Old March 12th 17, 06:21 PM posted to alt.comp.hardware.pc-homebuilt
Mr. Man-wai Chang
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Posts: 697
Default Would UEFI with CSM enable cause power problem to Intelmotherboards?

On 13/03/2017 12:02 AM, Paul wrote:

1) Verify the PCI or PCI Express cards fit properly.
Plug a test card into Slot 1 and Slot 6 and check
for binding, or for the plugin card being bent or torqued
on insertion into its motherboard socket. You want
the cards to fit smoothly and not be under stress.
I had one computer case, where the alignment was
terrible!

2) The screws for the standoffs are generally dead center.
The position of the motherboard should not be allowed to
drift too far from dead center. Each screw thread in the
standoff, should be nicely centered in the mounting holes.
When you install a motherboard, you have to hold the
motherboard in place with one hand, while tightening the
screws with the other hand. The spring fingers near the
I/O plate area, tend to push the motherboard out of position.


If it's metal contact and short-circuit issues, the problem should have
happened days ago. It's really weird as the problem suddenly surfaced
just yesterday night.

I would try to reproduce the problem later.

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
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  #6  
Old March 12th 17, 07:33 PM posted to alt.comp.hardware.pc-homebuilt
Flasherly[_2_]
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Posts: 2,407
Default Would UEFI with CSM enable cause power problem to Intel motherboards?

On Sun, 12 Mar 2017 23:32:35 +0800, "Mr. Man-wai Chang"
wrote:

Never mind. After reassembling everything from scratch, it is working
again now. Not sure whether it got something to do with weather though
(humidity 95%-100%).


Had that happen once before. Wouldn't power up no matter what I did.
Swapped out power supplies from another unit, even. Ooo..k...ahy
then. ...Last stop, time to strip it down. Pulled out everything.
Took special care with each hole for case mounting: Was it a plastic
insert standoff, or did it indicate metal-to-metal standoffs and
associated grommets. . .

Generally, (hmmm...), slap in a MB and some cheating around mounts
won't matter. It'll work fine. With that one, something though was
off-center, and a remounted assembly fixed it. Back with feet firmly
grounded.

Or, as you say, blame the 100% humidity, weather which I also prefer
and live in, closer than not to the equator.

(I didn't go so far as bring out alcohol, parts brush, and air
compressor -- stand vertically, wash and clean the layer of filth
collecting heat on everything before blowing it all dry, ink erasure
to readily clean male contact card insertion points, or quick-dry
automotive-grade electrical contact cleaner for going over everything,
conceivably, else mechanically passing a signal).

A dated MB of course from the past, before these newer brands, I
suspect I now have, built for the extremities of humidity and heat, or
generally friendly to otherwise industrial environs. Select Gigabyte
motherboards, you've probably by now correctly guessed.
  #7  
Old March 15th 17, 02:25 PM posted to alt.comp.hardware.pc-homebuilt
Mr. Man-wai Chang
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Posts: 697
Default Would UEFI with CSM enable cause power problem to Intelmotherboards?

On 13/03/2017 2:33 AM, Flasherly wrote:
....
Or, as you say, blame the 100% humidity, weather which I also prefer
and live in, closer than not to the equator.
...


The very last reason would be a security breach... but I don't wanna go
that route.

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
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  #8  
Old March 15th 17, 02:28 PM posted to alt.comp.hardware.pc-homebuilt
Mr. Man-wai Chang
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Posts: 697
Default Would UEFI with CSM enable cause power problem to Intelmotherboards?


This evening, I found that China Light and Power the electricity company
was digging the ground near my building. Was it moving large electricity
cables? Related to my power problem? Dunno...

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
http://www.swd.gov.hk/tc/index/site_...sub_addressesa
  #9  
Old March 15th 17, 03:38 PM posted to alt.comp.hardware.pc-homebuilt
Mr. Man-wai Chang
external usenet poster
 
Posts: 697
Default Would UEFI with CSM enable cause power problem to Intelmotherboards?

On 13/03/2017 12:02 AM, Paul wrote:

But that being said, you should not allow the motherboard to drift
too much, from dead center (as measured at each screw hole).


It seemed to happen again today. But this time, it might be Window$
Update...

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
http://www.swd.gov.hk/tc/index/site_...sub_addressesa
  #10  
Old March 17th 17, 02:54 PM posted to alt.comp.hardware.pc-homebuilt
Mr. Man-wai Chang
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Posts: 697
Default Would UEFI with CSM enable cause power problem to Intelmotherboards?

On 15/03/2017 10:38 PM, Mr. Man-wai Chang wrote:
On 13/03/2017 12:02 AM, Paul wrote:

But that being said, you should not allow the motherboard to drift
too much, from dead center (as measured at each screw hole).


It seemed to happen again today. But this time, it might be Window$
Update...


In the end, Window$ Update service was disabled.

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
http://www.swd.gov.hk/tc/index/site_...sub_addressesa
 




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