Laptop works ONLY at home why theory?

Moin people an unusual thing I have when I use my laptop at home he starts normally and I can use it quite normally so far so good…

For example, if I drive to college with a laptop or a friend, the laptop does not start at all. The screen just stays black (keyboard lights up). I can't do anything with it…
as soon as I'm back home and start it, it starts like there was never anything like that, how is that explained?

What if you put him on the ground somewhere (away from home)? Does it turn from black to light gray, or does it remain completely black (the screen)?

What do you want out?

Maybe it's because of the used tables. Or. That's what's under the tables (magnetism).

I think he means that only the backlight is not, then could be a loose connection

Hm on this theory I have not come yet… But he does not start if I hold in the hand or move through the room

How is it possible that this loose contact occurs only outside of home?

I do not know synonymous Have you plugged the power cord into a power outlet, instead of a multiple plug?

Through different positions of the laptop or the angle you unfold the screen

What is all connected when he starts and what is all connected if he does not start?

When he starts home everything is just as connected as when he starts somewhere else so charging cable / power adapter is connected

You could suspect earth radiation that is in your home, for example Disconnected by a wooden peg.

Joking aside. It is a coincidence that he can only be switched on at home.
I suspect the plug contacts of the battery prevent the supply of voltage.

Not starting does not say, unfortunately, whether he does anything at all. If any LED's light up, you hear the CPU fan, the hard disk.
Hard disk or RAM connectors are candidates for "do not go"

Hello outside my apartment.
Pc starts keyboard lights up screen stays black Hard disk works c.a 10 seconds then you can hear no more noises keyboard is druch going.
When I'm at home
Acer logo appears after launch
Within c.a 8 seconds I can log into Windows using Pw.

"at home" has another special feature, it is warmer. After driving at temperatures around zero degrees, condensation can be created inside. At the smallest distances of the conductor tracks, and in connectors then arise in conjunction with dust, although quite high-impedance, "short circuits".
Transport it well packed and try it.
Even with TV sets that were very sturdy back in the 1960s, there were problems with transportation.

Thanks for your answer is vieliecht a possible theory but a laptop for the equivalent of 700 euro solte already possessed the ability to use it anywhere…

Steam can't be deterred by the price, it penetrates, condenses and works.

Interesting problem…

So right away I just remember that something must be at home with you that does not exist elsewhere.

what kind of laptop (make / model) is that exactly?
Do you operate your laptop at home on a monitor?
Do you take the same power supply or is it an extra power adapter that you have purchased for mobile use?

Then I can't really help you sry

Just to rule everything out. You put him on your desk no docking station or the like and as soon as he is no longer on the desk he is no longer?

It is an Acer Nitro 5 …
And the other two questions I have to say no because both are not the case.

OK, it's the same power supply… Mhm… Think twice (no, I'm not giving up yet) …

It's really desperate.

How do you transport the device? Extra bag? How do you live, does it have a hallway and you can test the device in the hall?

Sorry but the steam theory lags very much if the notebook can start directly when he is at home. Water vapor or condensation does not disappear from now on suddenly and both current temperatures form on the way home (if at all) …

As long as there's only one theory, that's the best.

Of course, other causes are conceivable.

I once had a case, because the software wanted to reach a NTP server via a static IP address of a WLAN, if that was not possible, it would hang.

But since DHCP is more current today, I did not name something like that.

Did you try to start the notebook externally without extra power supply?