To reset your iPad without a password using iTunes on a Windows computer, follow these steps:
Connect your iPad to your Windows computer using a USB cable.
Open iTunes and select your iPad from the top left menu.
Click on 'Summary' or 'General' depending on your version of iTunes.
Click the 'Restore iPad' button and then click 'Restore' again in the popup window.
iTunes will now restore your iPad to its factory settings, erasing all data and apps. Make sure you have backed up any important data before proceeding.
Once the restoration is complete, try setting up your iPad as new or using a previously synced device to restore your content.
Note: If you're unable to access iTunes on your Windows computer, you can also use Recovery Mode to reset your iPad. To do this, connect your iPad to your computer and press and hold the Sleep/Wake button for at least 10 seconds until the Apple logo appears. Release the Sleep/Wake button but continue to hold the Volume Down button for at least 10 seconds until iTunes recognizes your device.
Alternatively, you can also use Recovery Mode with a Windows PC using the built-in recovery software from Microsoft.