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Computers randomly rebooting

Posted on 2014-03-06
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Last Modified: 2016-11-23
I have 4 different computers that randomly reboot.. They reboot properly.. Close programs etc.. and reboot back to windows 7 log in screen.  I've check the logs for one of the computers that rebooted today at 10:06am.  I only see a couple errors in Application and System event logs.. But not sure if this relates to the reboot and if so.. How to fix. Please see attached.

Computers are Dell Optiplex 390 - Windows 7 Pro - Office 2010. Symantec End Point Cloud.

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Question by:Goraps
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22 Comments
 
LVL 17

Expert Comment

by:pjam
ID: 39909653
First I would recommend a full virus scan and then a full malwarebytes scan.
You can also run:  SFC /scannow to assure they have all their windows system files
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LVL 3

Expert Comment

by:Jeremy Tyre
ID: 39909789
Try running the virus scanner from a linuz live usb and use clam av.  This is good about getting out dug in viruses and malware.
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Author Comment

by:Goraps
ID: 39910573
No Viruses. one tracking cookie.
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Author Comment

by:Goraps
ID: 39910598
sfc / scannow did not find any issues.
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LVL 17

Expert Comment

by:pjam
ID: 39910776
Another thought since they are OptiPlex.  check the motherboard for bulging or blown capacitors.  I have had serious issue with GX270 and GX280, replacing as many as 10 caps on a OptiPlex GX270.

Stopped purchasing OptiPlex so am unfamiliar with the 390.
As Jeremy says a boot virus scanner might be beneficial.  I use the Windows Defender Offline that is created either 32-bit or 64-bit depending on what I wan  to scan. It must be created on a virus free computer on a CD or USB stick.
 It is very good for boot sector stuff.  You can download at:
http://windows.microsoft.com/en-US/windows/what-is-windows-defender-offline
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LVL 92

Expert Comment

by:nobus
ID: 39911831
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Author Comment

by:Goraps
ID: 39912661
Please keep in mind that the computer reboots and closes all programs properly.. It does not  HARD reboot.

Recap:

-Symantec End Point Cloud - No Viruses
-Malwarebytes - 2 tracking cookies
-sfc / scannow did not find any issues.
- Windows Defender Offline - Full Scan - Nothing found
-Updated Bios to A11
- 10 mins later - System soft reboots - closing all programs and reboots to windows login screen.

As I was sitting there and working on this 390 - The 390 beside me starts to reboot.
The 3rd computer in question is a Optiplex 3010 - same rebooting issue.
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LVL 17

Expert Comment

by:pjam
ID: 39912690
If they are still under warrantee, what does Dell Tech Support say?
this is quite unusual.
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Author Comment

by:Goraps
ID: 39912702
I'm on the phone with DELL right now... They are saying I may need to reinstall windows.. Classic response to " I have no F'N idea whats wrong"
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LVL 17

Expert Comment

by:pjam
ID: 39912707
How about a Repair?
Or re-install with no format not losing data:
http://windowssecrets.com/top-story/win7s-no-reformat-nondestructive-reinstall/
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Author Comment

by:Goraps
ID: 39912739
Hardware repair or a windows repair?
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LVL 17

Expert Comment

by:pjam
ID: 39912756
Windows, since Dell thinks this is a W7 issue. I kinda doubt it though.
seven forums has a repair install procedure also:
http://www.sevenforums.com/tutorials/3413-repair-install.html?filter[2]=General%20Tips

latest BIOS for the 390 is A11 is that what you have?
http://www.dell.com/support/drivers/us/en/04/DriverDetails/Product/optiplex-390?driverId=PTHW0&osCode=ww1&fileId=3292917978&languageCode=en&categoryId=BI
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Author Comment

by:Goraps
ID: 39912830
BIOS was updated to A11 - Within 10mins system rebooted again.. DELL is sending a Motherboard and cooling assembly. If this does not fix the issue they want me to reload the OS..  DELL will be coming in on Tuesday next week. I will keep everyone posted.

thanks
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LVL 17

Expert Comment

by:pjam
ID: 39912916
Great,
Put the stress where it belongs.  Not on us hapless customers.
0
 

Accepted Solution

by:
Goraps earned 0 total points
ID: 39953816
I had Dell replace hardware all on 3 computers.. Every since hardware was replaced the computers have not rebooted - Prior to this they where rebooting multiple times a day.

Motherboard and cooling assembly
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LVL 92

Expert Comment

by:nobus
ID: 39953845
the PS was not replaced?
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Author Comment

by:Goraps
ID: 39953856
No.. they didn't replace the PS. They said if the MB and the Cooling Assembly did not fix the problem then I had to reinstall OS before they would send a PS...
0
 
LVL 92

Expert Comment

by:nobus
ID: 39953977
well - let's hope they know what they're doing
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Author Comment

by:Goraps
ID: 39991239
Computers have not rebooted since. Looks like a Fix... Not sure how to handle the ACCEPT SOLUTION
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LVL 92

Expert Comment

by:nobus
ID: 39991813
since you and dell fixed it you can assign points to you - or delete the Q
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LVL 59

Expert Comment

by:LeeTutor
ID: 40053065
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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