I will ask, again: Have you bothered to check whether the intended recipient will even accept these machines?
All of this is for naught if they will not.
Virtually no one wants or will accept WinXP era machines with WinXP on them in any academic setting anymore.
The easiest way to clean up any Windows machine (of any Windows version) for donation is:
1. Create a new account with administrator privileges.
2. Use that newly created admin account to remove all other accounts on the machine.
3. Download CCleaner and install it.
4. Use CCleaner's Drive Wiper (under the Tools tab) to wipe all free space on the computer with a one-pass or three-pass overwrite generally being more than sufficient unless the previous owner was the DoD.
You then have a machine with a fully functional OS, a brand spankin' new administrator ID with only the files and folders that Windows configures, and a hard drive with all unallocated space having been overwritten such that its prior data is not there anymore in a form that can be used.
Edited by britechguy, 29 September 2017 - 09:44 AM.