Q: iPad won't connect to computer, but asks to trust computer

Did you trying launching iTunes on your own if it's not launching automatically? That's how I interpret what you are saying by "nothing comes up on your computer"..

Evan try removing driver for iPad in Device Manager then restart PC, see if it will re-install driver, is your iTunes up to date, if not do so, or you may have to re-install iTunes too, remembering to restart after re-install. Jim

You must do this while iPad is connected, look for it at USB, select this, first try update driver, if that does not work try uninstall and then restart, with iPad connected, it should then re-install driver. I am no expert but this should help. Jim

I am not a Windows user, so I will leave the technical advice to Jim, but I just want to be sure that you went through every step in this support article or to make sure that you read it/are aware of it.

iPhone, iPad, or iPod not recognized in iTunes for Windows - Apple Support

I Think that it would be installed with iTunes but not being a Windows user, I am just guessing. Have you seen this?

How to restart the Apple Mobile Device Service (AMDS) on Windows - Apple Support

I'm sorry, but I'm at a loss. I am goiing to put out a call to someone that I think might be able to help. be patient. The response might not happen until tomorrow.

When this happens, go into the control panel, add/remove programs. Uninstall iTunes, Apple Mobile Device Service and Apple Application Support.

If you want to clean up the cobwebs, restart your computer, then redownload and reinstall iTunes and try again.

What I think happens is, when iTunes updates it doesn't always update the driver. But it sees the old driver, thinks it's the right one and gets stuck in a logic loop. Uninstalling those programs removes all the drivers and forces a fresh start.

For general advice see Troubleshooting issues with iTunes for Windows updates.

The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. There are some additional steps over and above uninstalling the components which may help ensure that the reinstallation is successful. Review the other boxes and the list of support documents further down the page in case one of them applies.

The further information area has direct links to the current and recent builds in case you have problems downloading, need to revert to an older version or want to try the iTunes for Windows (64-bit - for older video cards) release as a workaround for installation or performance issues, or compatibility with QuickTime or third party software.

Your library should be unaffected by these steps but there are also links to backup and recovery advice should it be needed.

tt2

I'm afraid I don't know why one or other component sometimes fails to install, only that it happens. Try the steps at Install missing components to add Apple Application Support. Often this will succeed when using the main installer hasn't, or, if not, you may get a useful error message which could give a clue as to what to try next.

tt2