Sleep Preventer: Prevent your computer from switching to Sleep, Hibernate, Standby mode

We have already seen two tools – Mouse Jiggler and Insomnia that can prevent your Windows computer from going to sleep. Sleep Preventer is yet another portable app that prevents a computer from dimming the screen display or entering into standby, sleep, or  hibernating mode.


To use this freeware:

  • Download the application and extract its contents with the help of free 7-Zip program.
  • Run the application. It is a portable app.
  • Click on ‘Prevent Sleep’ button to activate the utility. It will change to Preventing Sleep.
  • Once activated, the software will minimize itself in the system tray and can be accessed whenever required.


To exit the app, simply right-click on the icon and select Exit.

Sleep Preventer is a very simple and an efficient application for Windows 7, Vista and XP.

Download Sleep Preventer from here.

Also check out Insomnia & Mouse Jiggler.

Posted by on , in Category Downloads with Tags
The author Hemant Saxena is a post-graduate in bio-technology and has an immense interest in following Windows, Office and other technology developments. Quiet by nature, he is an avid Lacrosse player. Creating a System Restore Point first before installing a new software, and being careful about any third-party offers while installing freeware is recommended.


  1. I would like to know what are the reasons why we prevent our laptop/PC to sleep or hibernate mode?
    because if we are doing something, watching movies, downloading in our PC, it wont go to sleep or hibernate.
    Im curious about this kind of apps to prevent it.
    for me i really dont know why we prevent sleep or hibernate.
    microsoft add those features for good reasons 😉

  2. WormyWyrm

    Will this prevent the laptop computer from sleeping when the lid is closed?

  3. sickpuppy70454

    When WE can determine how it works, that’s one thing. But, in my case, our corp IT has set all the computers to sleep after 20 minutes of non-use for “security” reasons. That can be very inconvenient. For example, when 4 or 5 people share a computer for logging data, if it goes to sleep, the “owner” has to wake it up again. Or, if I’m going back and forth, I don’t want to have to wake my computer up every time I need to use it.

  4. Caleb

    Nope, don’t think so!

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