I guess many people know the issue of having a screen saver forced active after a some time through a group policy in a corporate environment. This is usually done to make sure systems are locked during breaks if people forget to press Win+L (or Ctrl+Alt+Del and then Enter). While that may well help IT security, it turns problematic when giving presentations for extended periods of time. Having to move the mouse through the presentation pointer every few minutes or dash back to the PC once the screen saver has kicked in, again, is simply annoying. On your company's systems you may be able to get the system admins to allow configuration of the interval or allow for disabling the screen saver, but on foreign systems you're often lost. But...
...a nice gentleman by the name of "Average Midget" has come up with a helpful piece of software called Screen Slayer (ScrSlayer). He published it in a thread on the Leoville Town Square forum. Quite a difficult place to find it .
It basically moves your mouse by zero pixels every time 80% of the configured screen saver timeout has passed. Thus Windows sees the mouse moved and starts counting again. This works in Windows XP and Vista for me.
As experience tells me, the software and its documentation through the forum thread will vanish sometime off the Internet. Thus I replicated the latest version of the full version of ScrSlayer.exe (including a GUI), the lean version of ScrSlayer.exe (without a GUI) and the three pages of the forum thread on 13.08.08 here: ScrSlayer.zip [213 kB].
Thanks Average Midget, nice work!
21.04.11 It looks like the Leovilletownsquare link is redirecting to some new forum installation now. No ScrSlayer info found there . Google still finds a copy of the old fusionbb software here. Let's see how long that one stays around.
The ScrSlayer.exe also works in Win7. Amazing.
As I've seen a copy of the ScrSlayer.zip on a Saudi Arabian blog (not that he linked the source...), I'd like to give checksums so people can verify the integrity of their downloads:
# file size ScrSlayer.zip 218563 bytes
md5sum ScrSlayer.zip d0a6ec5616b39739c7abf65626a6753a
sha1sum ScrSlayer.zip e84eefca6bfbce526f792fb91873e4fa5cf01442
27.04.17 I just had to run ScrSlayer on Windows 10 to get the TomTom MyDrive Connect software to update a TomTom Go with the newest map. This takes about an hour and failed twice when run under plain Windows 10 without somebody using the system. So apparently Win10 goes into some type of hiatus. Probably saving a few mA on the USB ports. Where the TomTom Go is connected. Duh. Started ScrSlayer and the system stayed active and the TomTom software managed to complete the update on the navigation device. Still an awesome tool to work around failed pieces of software and/or policy.
21.12.19 Remy van Elst wrote ScreenSaverStopper. It sends the F24 key every 40 seconds and therefore keeps Windows from activating the screensaver, too. No UI, just a plain executable like the ScrSlayerLean version from Average Midget's ScrSlayer.zip linked above.