I found that System Mechanic which I use had found a large number of registry errors. I let it correct those and from that point on, the slideshow on lock screen did not work.
After I thought of that possibility, I un-did that registry fix and the slide show worked. After that, I checked for registry errors again with System Mechanic and it did not find any errors.
I don't know how to avoid this in the future, I like System Mechanic, but I do know how to immediately fix the problem if it happens again.
Thanks,
txlevi
My slide show on lock screen was working. I did a clean boot install of Windows 8.1 to speed things up, but now the slide show on lock screen no longer works.
I am running Windows 8 64 bit with 6 gig of memory. All the drivers are up to date and everything else seems to run great since 1/1/14 clean install.
Symptoms: When time is used up before the slide show starts the lock screen comes up. No slide show, but after a minute the lock screen disappears and screen goes blank.
Using the same picture directory with the old screensaver, makes a slide show display on screen blanking.
Does anyone have an idea to make this work again on the lock screen?
Thanks and Happy New Year!

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