From Newsgroup: alt.comp.os.windows-11

I have two identical models of an HP laptop. They were bought new a
little over a year ago. While both are Window 11 and updated
concurrently, they have different programs on them.

Sometimes I have them both running at the same time. Recently I need to
go away from the computers and set one computer on the keyboard of the
other. Both were on and the OS loaded.

Twice when I did this I got a strange error after doing this and the
computer had to be shutdown and restarted.

Question can two computer that are both running cause interference in
the other computer IF they are very close, ie one setting on the others Keyboard
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From Newsgroup: alt.comp.os.windows-11

knuttle wrote:

I have two identical models of an HP laptop. They were bought new a
little over a year ago. While both are Window 11 and updated
concurrently, they have different programs on them.

Sometimes I have them both running at the same time. Recently I need to
go away from the computers and set one computer on the keyboard of the
other. Both were on and the OS loaded.

Twice when I did this I got a strange error after doing this and the
computer had to be shutdown and restarted.

What was the error? Not just "a strange error" -- what *exactly* is
happening? Is there an error code?

Question can two computer that are both running cause interference in
the other computer IF they are very close, ie one setting on the others Keyboard

In the way you're probably thinking, not really. But why is one on the
other's keyboard? Don't do that.

Also: I have multiple HPs myself. One of them came with a bad RAM stick from the factory. Things happen. If you suspect hardware issues and your machines are still in warranty, contact HP support.
--
Book 1 is high fantasy.
Book 2 is a submarine thriller.
Book 3 is a romantic comedy.
Book 4 is a cookbook.
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From Newsgroup: alt.comp.os.windows-11

Op 21-06-2026 om 20:11 schreef knuttle:

I have two identical models of an HP laptop.-a They were bought new a
little over a year ago.-a While both are Window 11 and updated
concurrently, they have different programs on them.

Sometimes I have them both running at the same time.-a Recently I need to
go away from the computers and set one computer on the keyboard of the other.-a Both were on and the OS loaded.

Twice when I did this I got a strange error after doing this and the
computer had to be shutdown and restarted.

Question can two computer that are both running cause interference in
the other computer IF they are very close, ie one setting on the others> Keyboard

You put one laptop on top of another one? both running?
Never tried that, but I can imagine pressing all keys at the same time
on the bottom one would give an error.
Depending on the weight of the top computer of course.
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From Newsgroup: alt.comp.os.windows-11

On 6/21/26 2:11 PM, knuttle wrote:

I have two identical models of an HP laptop. They were bought new a
little over a year ago. While both are Window 11 and updated
concurrently, they have different programs on them.

Sometimes I have them both running at the same time. Recently I need to
go away from the computers and set one computer on the keyboard of the
other. Both were on and the OS loaded.

Twice when I did this I got a strange error after doing this and the
computer had to be shutdown and restarted.

Question can two computer that are both running cause interference in
the other computer IF they are very close, ie one setting on the others Keyboard

Don't lay one on top of the other. Don't ask for issues.
Make two bat files. I don't care what you call them. You can assign an icon to them if
you want to make them easier to see between the two.

Here is the code you put in them.
**Note** you'll probably have to change the "4f971e89-eebd-4455-a8de-..." value for your
config. powercfg <some argument> will probably give you the value. I don't remember how
I found it. Try chatgpt.

With the bat files you can click the 'close lid nothing' batch and then close the lid.

@echo off
rem Close Lid does nothing.
powercfg -setdcvalueindex SCHEME_CURRENT 4f971e89-eebd-4455-a8de-9e59040e7347 5ca83367-6e45-459f-a27b-476b1d01c936 0
powercfg -setacvalueindex SCHEME_CURRENT 4f971e89-eebd-4455-a8de-9e59040e7347 5ca83367-6e45-459f-a27b-476b1d01c936 0
powercfg -SetActive SCHEME_CURRENT
echo.
echo Lid close does nothing.
powershell -c (New-Object Media.SoundPlayer "C:\Users\alkne\Music\Sounds\waves\ringout.wav").PlaySync();
pause

------------------------------------
@echo off
rem Close lid goes to sleep
powercfg -setdcvalueindex SCHEME_CURRENT 4f971e89-eebd-4455-a8de-9e59040e7347 5ca83367-6e45-459f-a27b-476b1d01c936 1
powercfg -setacvalueindex SCHEME_CURRENT 4f971e89-eebd-4455-a8de-9e59040e7347 5ca83367-6e45-459f-a27b-476b1d01c936 1
powercfg -SetActive SCHEME_CURRENT
echo.
echo Lid close will sleep.
powershell -c (New-Object Media.SoundPlayer "C:\Users\alkne\Music\Sounds\waves\ringout.wav").PlaySync();
pause
--
Mint 22.3, Thunderbird 140.12.0esr, Firefox 152.0.1
Alan K.
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From Newsgroup: alt.comp.os.windows-11

On Sun, 6/21/2026 2:11 PM, knuttle wrote:

I have two identical models of an HP laptop.-a They were bought new a little over a year ago.-a While both are Window 11 and updated concurrently, they have different programs on them.

Sometimes I have them both running at the same time.-a Recently I need to go away from the computers and set one computer on the keyboard of the other.-a Both were on and the OS loaded.

Twice when I did this I got a strange error after doing this and the computer had to be shutdown and restarted.

Question can two computer that are both running cause interference in the other computer IF they are very close, ie one setting on the others Keyboard

On the first personal computers, we did note proximity effects.

When I took a work computer home, one that was a prototype and
not a product, little did I suspect it was in gross violation
of FCC Part 15. It wiped out all broadcast TV in my apartment.
I took it back to work, immediately :-)

As a proximity effect, we placed an ATX PSU next to a full height
5.25" HDD. The disk got read errors. When we moved the two pieces
of hardware apart... it stopped.

But proximity effects today, are much reduced, so it is less
likely that there would be a proximity effect from say, a mag field.

*******

Now, not many people will have done this, but you can do some
neat proximity testing with old CRT TV sets. The flyback is somewhere
in there. You can hold a fluorescent tube (the small kind used
in 6VDC florry lamps) next to the side of the CRT TV set, and
the tube would light up. That's the field from the flyback,
coupling to the tube and some voltage has been generated
to make it light up.

That illustrates the idea, that we haven't always cared about
E or H field outside of electronic boxes. This suggests that
if you were to hold a smartphone against the side of a running
CRT TV set, there is a possibility of malfunctioning occurring.

There are power converters inside the laptop. There are inductors
in the VCore circuit area. But they would have to be "close"
to something that is sensitive to that, for a malfunction to occur
in a laptop laid on top of the first laptop. There can be iron cores
on the inductors, or ferrite-like material, and at least some
of those also have features to help contain the magnetic loop.
Sometimes the inductors have a heatsink over top, partially
obscuring them.

Summary: It's not recommended to pile running laptops on top of one another.
This would be a bad habit to get into, if say there was a Toshiba
rotating HDD inside one of the laptops. Laptops with NAND flash
storage, are much less susceptible to mechanical shock. You could
scratch screens, or bust one of those ultra-cheap keyboards.

While the people who build these, do attempt to carry out
environmental tests, it's easy to dismiss this sort of testing
and consequently, issues can be missed along the way.

Paul
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From Newsgroup: alt.comp.os.windows-11

On Sun, 21 Jun 2026 18:00:24 -0400, Paul wrote:

hen I took a work computer home, one that was a prototype and not a
product, little did I suspect it was in gross violation of FCC Part 15.
It wiped out all broadcast TV in my apartment.
I took it back to work, immediately

One project I worked on used the original Mac toasters for the
documentation people, the only time I saw Apple products used. Their claim
to fame was they could meet the TEMPEST requirements.

Now, not many people will have done this, but you can do some neat
proximity testing with old CRT TV sets. The flyback is somewhere in
there.
You can hold a fluorescent tube (the small kind used in 6VDC florry
lamps)
next to the side of the CRT TV set, and the tube would light up. That's
the field from the flyback,
coupling to the tube and some voltage has been generated to make it
light up.

The fist company I worked for made dielectric preheaters for the plastics industry. The base technology was you put your thermoset material in a RF cavity and let fly. The larger models were 15 KW. We mounted 6"
fluorescent tubes in battery clips screwed to the cavity walls to see what
was happening. Most maintenance electricians were mystified why the lights came on. We also checked for leaks with a tube taped to a broomstick. High technology.

While the company did build a couple of high power microwave ovens that
were tested in local restaurants, they completely missed the consumer
market.

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From Newsgroup: alt.comp.os.windows-11

On 22/06/2026 4:38 am, dillinger wrote:

Op 21-06-2026 om 20:11 schreef knuttle:

I have two identical models of an HP laptop.-a They were bought new a
little over a year ago.-a While both are Window 11 and updated
concurrently, they have different programs on them.

Sometimes I have them both running at the same time.-a Recently I need to
go away from the computers and set one computer on the keyboard of the
other.-a Both were on and the OS loaded.

Twice when I did this I got a strange error after doing this and the
computer had to be shutdown and restarted.

Question can two computer that are both running cause interference in
the other computer IF they are very close, ie one setting on the others
Keyboard

You put one laptop on top of another one? both running?
Never tried that, but I can imagine pressing all keys at the same time
on the bottom one would give an error.

I would have thought that, as the CPU went thought its Keyboard Scanning sequence, it would get to the first 'depressed' key .... and do THAT
function endlesslyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy!! ;-P

Depending on the weight of the top computer of course.

Of course. ;-P
--
Daniel70
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From Newsgroup: alt.comp.os.windows-11

On 22/06/2026 8:00 am, Paul wrote:

On Sun, 6/21/2026 2:11 PM, knuttle wrote:

I have two identical models of an HP laptop. They were bought new
a little over a year ago. While both are Window 11 and updated
concurrently, they have different programs on them.

Sometimes I have them both running at the same time. Recently I
need to go away from the computers and set one computer on the
keyboard of the other. Both were on and the OS loaded.

Twice when I did this I got a strange error after doing this and
the computer had to be shutdown and restarted.

Question can two computer that are both running cause interference
in the other computer IF they are very close, ie one setting on the
others Keyboard

On the first personal computers, we did note proximity effects.

When I took a work computer home, one that was a prototype and not a
product, little did I suspect it was in gross violation of FCC Part
15. It wiped out all broadcast TV in my apartment. I took it back to
work, immediately :-)

Just your apartment .... or the whole apartment block??

(How to win friends and influence people!! ;-P )
--
Daniel70
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