Laptop apparently broken

I screwed up my laptop today because it was so loud and hot that I wanted to clean my fan!
Then I wanted to close it again but my laptop goes on and you also hear the fan noise briefly and then off again…
Please ask for SERIOUS help

Hello oh that does not sound so good with your Laptop.Da your fan is broken and durchgeschmort.Mach simply a new fan rein.Viel Erfolg.Wünsche you a nice 2Advent.Lg Klose11

Is the fan only 1 x on and then it does not work anymore?

Normal is when the fan only 1 x and then off. That's the self-test. The fan should then start when needed (in case of heat)

The fan turns on slowly and then off again and my laptop screen stays black

Before that, my laptop was okay

Or let him look at the computer specialists. They know more about what is broken.

Well, that's hard to judge… Either somewhere has a connector / connection cable gone, or the board detects vlt the speed signal of the fan no longer and therefore switches off directly again. It can also be that you have missed him with the clean vlt an electric shock, without realizing it and he is all over…

If you really want to save him, you have the best chance if you bring him to an expert. Otherwise, you can risk it, and make him careful again to look after the right one.

Did you just have to open a lid or did you have to disassemble it completely to clean it?

Have everything settled until you have seen the motherboard… Now it is so that my power button (SonyVaio laptop) is on and sometimes my laptop is synonymous with the fan but again goes out

If you had to open more like just a service cover on the bottom, I'm assuming strongly that somewhere a connection is not really tight, or even off. But you can only know that, if you open it again and control everything… I do not like that, because it can be fumbling to get a laptop together again so that everything stays fixed, or you can do it again everything gets…

I opened it and everything was completely normal NOTHING was outside or anything else everything looked great

Remote diagnostics are almost impossible. If you do not find anything that vlt could have solved, eig remains only a motherboard defect by a static discharge, or just the speed signal is no longer on the board. Cooling pipes but you had not agreed, only the fan solved and dedusted?

Well, if you are SAFE that all cables are tuned, that's not great. But maybe your TFT cable is not right. Hang a monitor or TV on your laptop.

The fan I could not solve because a screw was so tight that it was not possible and I would rather have left
But then I just dusted off the fan a bit

Then it could still be vlt that he does not reach his speed, which awaits the board, because even dust blocks him a bit. But only guesses…

You can, if you have it open, block the fan (so hold on) and suck it out, vlt before the plug from the board, sure is safe… Or sometimes with a little compressed air (from the can or compressor to very weak) from the outside blow into the ventilation and then vacuum the dust. But it is always important that the fan does not turn on and does not get too much pressure. The fan blades break fast (own experience ^^).

My advice, however, still tends to the expert, instead of self-attempts, especially when it is a problem… And especially if a new laptop is not an option at the time and this must necessarily run again…

The laptop is already 8 years old and unfortunately does not work that way either