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What can I install on a computer that will lock the operating system after a set period of time passes?

I am a computer repair guy, and am tired of people paying me with checks that bounce. I would like to find a way to lock the computer after 1 week, where the person would need to call me for a verification code. That way I can ensure I will get paid, and if I don’t they cannot use their computer. It takes 1 week for a check to clear, that is the reason for the automatic lock after a certain time period. Thanks for any help you can offer.
I do accept credit cards but just got burned on a big check from last week and now the person isn’t answering their phone. Maybe I am just mad right now, but it doesn’t seem right that people can not pay for a benefit given to them.


4 Responses to “What can I install on a computer that will lock the operating system after a set period of time passes?”

  1. crackpac says:

    i’m not sure you can legally do what you want to do. if you’re having a hard time with checks, and are not set up to take credit cards, you should probably accept cash only.
    you could probably set up a paypal account online for this purpose as well..

  2. xenia s says:

    You can’t do that on peoples computers.If you have problem collecting money let them know you only accept cash.

  3. Who Dares Wins says:

    If you look at this spec it allows you to lock a computer at a specified time. Not sure if it will work on a certain day.

    wdw

  4. Jim S says:

    You’ll lose a lot of customers with the I-hold-your-computer-for-ransom business model. Demand payment via PayPal while the system is being repaired or require cash on delivery. If you truly wanted to lock somebody’s system, create a scheduled task that triggers a registry edit that will kill the system until a backup is restored.