The iPad doesn’t detect any usb device or pc and I can’t upgrade for the new version

Be aware that the iPadOS 17.7 update was replaced today with iPadOS 17.7.1. If you have already downloaded (but not successfully installed) the iPadOS 17.7 update, delete the update package as previously described. After verifying that the update package has been removed, perform a forced-restart of your iPad:

Force restart iPad (models with Face ID or with Touch ID in the top button)

If your iPad doesn’t have the Home button, do the following:

1. Press and quickly release the volume button nearest to the top button.
2. Press and quickly release the volume button farthest from the top button.
3. Press and hold the top button.
4. When the Apple logo appears, release the top button.

Force restart iPad (models with the Home button)

Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.

Instead of using your PC to update your iPad, try updating directly from iPad settings to either iPadOS 17.7 or 18.0.1.

Settings > General > Software Update

If you have tried this already - and have been unsuccessful - what precisely do you see when you try? Please post a screenshot of what you see:

Take a screenshot on your iPad - Apple Support

You can upload your screenshot using the image button at the bottom of the message editing window:

Have you tried using a different Wi-Fi network? If there's any sort of firewall or VPN on your usual network, that can block the connection to Apple's update servers. You may need to remove the downloaded update before you attempt the update again:

If your iPhone or iPad won't update - Apple Support

If you've tried other networks and the update still fails, I'd suggest making an appointment at an Apple Store or authorized Apple service center to have your iPad evaluated.

Regards.

You might be best advised to seek assistance directly from Apple Support. You can contact the Support Team using the Support link at top-right or bottom-left of this page.

Alternatively, you can initiate and manage your support cases from Apple devices using the excellent Apple Support App. If not already installed, the App can be downloaded from the App Store:

https://apps.apple.com/app/apple-support/id1130498044

You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to offer assistance:

Genius Bar Reservation and Apple Support Options - Apple

Clearly your circumstances are complicating and restricting your available options - this being something that Contributors here can do nothing to alleviate.

If your iPad isn’t recognised when connected, try using a different USB port; if your computer has both USB-C and USB Type-A ports, try a Type-A port. Otherwise, this support page should help with troubleshooting connection difficulties:

If your computer doesn't recognize your iPhone or iPad - Apple Support

The update package that you have already downloaded (but have been unable to install) may be damaged or corrupt. This update package mist be removed prior to attempting the update again.

Settings > General > iPad Storage

Scroll down through the list of installed Apps until you find the update - then tap and select Delete. Once the faulting update package has been removed, you can try again to update the ipad from settings:

Settings > General > Software Update