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Windows 7: Windows 7 system shuts down by itself

08 Apr 2015   #1

Windows 7 Home Premium 32bit
Windows 7 system shuts down by itself

Since I purchased this Dell Inspiron desktop in November '14, the computer has occasionally shut itself down. It has been occurring more often lately, sometimes shortly after turning on, sometimes after much longer. Fortunately I haven't lost any data. When it occurs, I reboot and select the option of "start Windows normally" and everything is fine (until it happens again .
Any help will be greatly appreciated.

My System SpecsSystem Spec
08 Apr 2015   #2

Windows 7 Home Premium 32bit

To clarify: the computer literally turns off (no power). Thanks
My System SpecsSystem Spec
08 Apr 2015   #3

Windows 7 Pro x64 Windows 10 Pro x64

Maybe a bad power supply.

Your computer is still under warranty, call Dell for a new Power Supply
My System SpecsSystem Spec

08 Apr 2015   #4

Windows 7 Home Premium 32bit

Thanks, I will check that out.
My System SpecsSystem Spec
16 Apr 2015   #5

Windows 7 Home Premium 32bit

I am continuing to have this problem, almost on a daily basis now. However, I'm beginning to think it's not the power supply since it happens only when I'm NOT using the computer. This makes me think there might be something going on between the monitor and Windows 7. In other words, if the screen saver is on, it sometimes happens, but if I turn the monitor off (or I'm using the computer) it has NEVER happened. Would the monitor's sleep mode be involved? Has anyone ever experienced this? The monitor is an HP 20", purchased with the Dell desktop Inspiron 3847.
My System SpecsSystem Spec
16 Apr 2015   #6

W7 Pro x64 SP1 | W10 Pro IP x64 | W8.1 Pro x64 VM | Linux Mint VM

Check in Event Log to see if anything is showing. Also change your Power Options to disable the screensaver and sleep options to see if the problems persists.
My System SpecsSystem Spec
16 Apr 2015   #7


Have you run Dell Hardware Diagnostics from F12 Menu?

Work through Troubleshooting Steps for Windows 7 starting with the hardware tests, in particular check for overheating in Step 4 by installing CoreTemp to monitor temps and if necessary clean out dust.

The step for resolving repeat errors will show you how to check for clues as to the cause at the time of shutdown, per Gavin's excellent suggestion above.
My System SpecsSystem Spec

 Windows 7 system shuts down by itself

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