lock computer

I am having this weird issue of 2 computers that go into a lock the computer state periodically.  Today a person told me that their computer does it about 10 times a day.  They will working and then they will go to the bathroom or be doing something else and when they come back the computer screen is black and they have to hit a key and it shows the computer is locked and they hit enter (because they don’t have a password) and it get them back in.  This just started this week on 2 computers.  Any ideas?
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Scott CSenior EngineerCommented:
Screen saver that locks the computer has been enabled?
mkramer777Author Commented:
These computers have been in this office for 3 years and they have never done this until this week.  Could a screen saver been enabled automatically without the user enabling it?
Scott CSenior EngineerCommented:
Possibly if they installed something that enabled a screen saver.  Check to see if a screen saver is enabled.

Also look through Control Panel to see if anything has been installed lately that shouldn't be there.

Run a virus/malware scan.  See if that turns anything up.

Something has changed in the past week and getting your users to admit anything will be impossible.

Just as an aside...When I did desktop support, my users would install something called "weather bug" they swore every which way to Sunday they didn't know how it got there.

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Will SzymkowskiSenior Solution ArchitectCommented:
This is most likely the monitor settings tunring off after a period of inactivity. Check if it is a GPO that has been applied. Also check the Power settings on the users machine as well.

TemodyPickalbatros, IT ManagerCommented:
On control panel go to power options change the power setting to high performance instead of balanced mode
it can even be caused by the latest updates
you can uninstall them, or do a system restore to a date it was ok for testing
then watch the updates, or install them 1 by 1
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