A few minutes ago I was about to prepare a post, and this involved grabbing a couple of screen shots from websites to illustrate my points. But the Windows PrtScn and Alt-PrtScn snapshot facility wouldn’t work, or at least wouldn’t grab anything that would paste into Photoshop.
Then I remembered. When I opened up Photoshop yesterday, I was also running Cyberlink PowerDVD in order to play a Blu-ray disc which I was exploring. But PowerDVD interferes with Windows display functions. In particular, it prohibits screen captures. Even though I had since closed it down, presumably this setting had stuck with Photoshop (I closed it down and restarted it, and it is now fine).
PowerDVD also mucks up my power saving settings. I like to have the Power Scheme switch off the the monitor after one hour. PowerDVD interferes with this. Not straight away, but after several hours. I have gotten into the habit of going into this setting after I’ve used PowerDVD to change the ‘Turn Off Monitor’ setting back to ‘After 1 hour’ from the ‘Never’ to which PowerDVD has set it.
All this is, presumably, intended to stop people from taking screen shots of whatever it is displaying. Which is plain silly, because there are other ways of doing that far more easily.