My computer shuts down after 30 minutes, no screen standby, then when you connect, it says its locked?

When I stop working on my computer (Dell Inspiron, aio, 2305) I noticed that the screen saver comes on and then it starts to Shut Down without asking to my. All I had to do it before (after the screen saver stopped) was click on any key and the computer was delivered.  Now, there is no screen saver, the computer just stops.  The log on screen, it says as my SMA, locked.  I have to enter my password.  This weird isreally.    Please help, before things get really out of control,

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Hello
(1) have you made changes before the start of this issue?
(2) what is the exact error message/code?
(3) windows operating system you are using?
Try to change the screen saver and check if you face the same problem.
You can check the power setting and set it accordingly.
See the link below:
For windows 7
Power management
http://Windows.Microsoft.com/is-is/Windows7/products/features/power-management

For windows XP:
Configure Windows XP power management
http://Windows.Microsoft.com/en-us/Windows-XP/help/Setup/configure-power-management

See also:
What happened in standby and hibernation mode?
http://Windows.Microsoft.com/en-us/Windows-Vista/what-happened-to-standby-and-Hibernate

I hope this helps.

Tags: Windows

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