pc freezes and doesn't start up anymore on windows

[chris85000]

Bonjour, je viens demander votre aide car mon fils a dû faire une mauvaise manipulation et maintenant son pc est bloqué

J’ai mis une photo pour que vous puissiez voir la situation

Je reste à votre disposition pour toute information complémentaire, merci à vous

[Prométhée]

Hi

Please write in English @chris85000 

Use a translator, if necessary

so try to know a little more, what has been done before this problem

Hello

[start]This is an automatic response
in order to avoid writing the same thing each time

Some elements may therefore not apply to you 
To be able to answer you effectively, we need some information

we need the exact model of your computer, and the product number
To find it follow this
for a desktop computer

HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support
and for a laptop
HP Notebook PCs - How Do I Find My Product Name or Number? | HP® Customer Support

Give the full name with the product number P / N

this is not a model:
HP Desktop M01-F1xxx
the requested product number must look like this
Product Number: 9EE50AA # ABA
the model corresponding to this number will therefore be
HP Desktop - M01-F1033wb

Give the full version of windows

for windows 10 type winver in the search box
if you give the best information
your problem could have a solution more quickly (depending on the difficulty, of course)
Learn how to use the Community

Advice for asking the "Very Best Question"

First-Time-Here-Learn-How-to-Post-and-More

[chris85000]

Hello Prometheus, I'm really sorry for the text in French

Here is my problem my son to block his pc it is a young teenager with a mental handicap but until now it is to make functioned his pc to navigate on the net, I believe well that it wanted to install Windows 11 on a pc Windows 7 but I am not on 100%.

it is a pc windows 7 pro 32 bits
product : AT496AV
serial : CZC122558K

I hope we can make it work again and thank you very much for your help

[Prométhée]

no problem, it's just a rule here, everyone must write in English
If he tried to install windows 11, and it went wrong, he may have erased everything..
You would be able to use a live type cd, otherwise, unmount the hard drive, to open it with another computer
In order to check, if the old data are present, and try to recover them:

[macro]

You can try a bootable cd / dvd type live cd (linux)

https://www.online-tech-tips.com/computer-tips/how-to-retrieve-windows-files-using-a-linux-live-cd/

you can try removing the hard drive, in order to connect it to another computer internally, or with a usb adapter!

https://www.muo.com/tag/connect-get-data-off-hard-drive/
I'm afraid the only option will be to reinstall windows..

[chris85000 · Accepted solution]

okay I'll try to install windows again with a usb key, I've seen tutorials for that.
really thank you very much for your quick answer and thanks to all the HP community team.