But you may encounter folk that won't get the required USB DVDRW or even an USB stick. Be sure to keep your distance while they learn that such things are not optional in repairs.

Also you may want to backup before changes with a full image of the HDD since they seem to have opted out of the drive and restore medai creation.

There's a lot to talk about here since those common netbooks had a lot of folk thinking they could get along without the USB DVDRW. You, again, need to let them work through it.

-> With that out of the way I pull out my USB DVDRW, boot up NTPASSWD to reset the admin password and in less then 5 minutes we are done,. NTPASSWD is free, plenty of web pages on creation and use do I stop here.
Bob