Unexpected shutdown


New Member
From time to time my system (Vista64) shuts down - when IDLE - for no reason.
WIndows restarts and says: Windows recovered for an unexpected shutdown... error report send.

How to debug? Note that the system is idle; only background processes are running.

What I've done sofar:
- Ran extended memory test: no problem
- Disabled power saving settings (as I suspected a problem going into hibernate/sleep). No effect.
- Disabled all "user based processes" as Picasa, Google indexing, CPU-temp watcher etc..
- Removed all USB sticks (no readyboost anymore)

No help. I leave the system idle and 10minutes to 2hours later; bang; shutdown
Note also that the system never chrashed when I'm actually working.

So, not a severe issue but I feel intellectually challenged to get the thing under control.
Any idea's on how to proceed further?

My Computer


Vista Guru
Gold Member
Try looking in schedule task. A task may be running when the computer is idle for a time limit.

Try looking in your error logs by;

Left Click on Start Menu.
Right click on Computer and choose manage.
Click on the event viewer.
You now have loads of options to try and pin down what is happening.
Expand the error tab.
Look for things in the last 24 hours.

My Computer

System One

  • Manufacturer/Model
    Self Built
    I5 3570K
    Gigabyte Z77-DS3H
    4 x 4GB corsair ballistix sport DDR3 1600 Mhz
    Graphics Card(s)
    Gigabyte Geforce GTX 660 TI
    Sound Card
    creative x-fi
    Monitor(s) Displays
    Primary CiBox 22" Widescreen LCD ,Secondary Dell 22" Widescreen
    Screen Resolution
    Both 1680 x 1050
    Hard Drives
    2 x 500G HD (SATA) 1 x 2TB USB
    Corsair HX 620W ATX2.2 Modular SLI Complient PSU
    Antec 900 Ultimate Gaming Case
    3 x 80mm tri led front, 120mm side 120mm back, 200mm top
    Technika TKOPTM2
    Internet Speed
    288 / 4000
    Other Info
    Creative Inspire 7.1 T7900 Speakers
    Trust Graphics Tablet


Old and cranky
Vista Guru
The most likely cause for this sort of errors is video or storage drivers.

Let us have a look at the memory dumps that were generated from the crashes.
To do this, navigate to C:\Windows\Minidump, zip up the files there, and upload the .zip file in your next post.

If it won't let you zip them, copy them to your desktop and then zip them up.

My Computer