my iphone has been frozen since friday night and it state I must connect to a laptop and when I put the USB cable on the laptop does not recognise it

To troubleshoot this with your iPhone, you can try the following steps:

1. Ensure that you have the latest version of iTunes installed on your computer. Check for updates within the iTunes application or download the latest version from the Apple website.
2. Restart both your iPhone and the computer you are using. This can help refresh the connections and clear any temporary glitches.
   1. Restart the device. That's it.
   2. Still not solved --> Force restart iPhone - Apple Support
3. Ensure that the USB cable is securely connected to both your iPhone and the computer. Try using a different USB cable or port to see if that resolves the issue.
   1. Use your USB lightening cable --> Resolve USB-related alerts in iTunes - Apple Support
   2. If unable to connect --> If iTunes doesn't recognize your iPhone, iPad, or iPod - Apple Support
   3. For your Windows PC —> Troubleshooting issues with iTunes for Windows - Apple Community
   4. Use genuine cable --> Identify counterfeit or uncertified Lightning connector accessories ...
   5. To navigate iTunes, use the buttons in the navigation bar at the top of the iTunes window. To switch to a media type, like Music, Movies, TV ... Download and use iTunes for Windows 10
4. Temporarily disable any antivirus or firewall software on your computer and then attempt the sync or restore process again.
5. If all else fails, you can try uninstalling iTunes from your computer and then reinstalling it. Follow the official instructions from Apple for a clean uninstallation and reinstallation process.

If you continue to experience an error after attempting these troubleshooting steps, it's recommended to contact Apple Support or visit an Apple Store for further assistance. They can provide specific guidance based on your device and help diagnose and resolve the issue.