Can I restore iPad from an HP computer?

Yes, after downloading/installing iTunes on that computer.

Keeping in mind that if you don't have a backup all data will be lost on that device (except those that you eventually synced to iCloud), pay attention to the specific gestures that you need to perform while connecting your iPad to a computer (Windows 10 PC running the latest iTunes version) or Mac (wich can have iTunes or Finder, depending on the macOS installed on it), and follow these instructions to re-gain access to your device:--> If you forgot the passcode on your iPad, or your iPad is disabled

Regards

Giulio

Yes, if it has iTunes installed.

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