IT/Programming Help

The client we are developing this for is a rent to own company. Basically they want software from us that will disable a pc and basically force the customer to bring in the computer to have it “fixed” and make a payment or it dosent get fixed.

Basically, we throw a garbage value into boot.ini so the pc won’t boot the OS.
The customer then brings the pc in for repair and to make a payment. At which time we use a startup fix utility to repair the damaged boot.ini file.