ups - Reboot after power failure not working

07
2014-07
  • Mark Webb

    My bios (american megatrends) has an option to reboot after power failure which I have set only it doesn't work. I have a UPS which shuts it down correctly and then disconnects the power. When power is restored the UPS comes back up but the pc does Zip and has to be manually restarted. Whats going on and how can I sort it? I need this machine to restart while I am away for cctv monitoring.

    • Answers
  • Heptite

    In the scenario you describe, the machine is in fact not experiencing a power failure. The UPS is signalling it to properly shut down. So, in that sense, the BIOS is doing what it's supposed to do.

    Now, if you had no UPS and you had a power failure, the BIOS would detect that and power the machine back up when power was restored.

    Are there any other options in the BIOS to control booting?


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  • mikelbring

    My Gateway LX Series desktop is about 6-8 months old. When I bought it, it had Windows Vista. I then put the RC version of Windows 7 on it. About 3 months after I bought it, it would randomly start to reboot, actually just shut off. I monitored the temperature levels and they seemed normal. So I installed a fresh Windows 7 Ultimate OEM 64bit. It actually got worse and would reboot more frequently.

    I then contacted Gateway and they said my machine was built for Windows Vista (made me chuckle), and told me to update my BIOS. So I did, and it was fixed for a good couple months.

    Recently, it started to do it again. Now I noticed early on it was doing it most often, if not every time when I was either watching a flash video or playing a flash game. So I decided to download the drivers again and I also downloaded my motherboard drivers. Seemed to be okay. A week later it started doing it again. And now it's doing it even more frequently. Sometimes I would turn it on, login into Windows and *BAM!* it would shut off.

    Now I am at the point where I can hardly get it to turn on. It would freeze at the point where it says "Starting Windows", with the Windows logo. Sometimes it would say "Checking disk for consistency" or whatever and freeze there (not shut off, just freeze). I even got the prompt to launch startup repair. But that also freezes when it says starting Windows. It does not really freeze, just never loads up.

    I am kind of lost as to what's going on. I have a few ideas but nothing I want to pursue (graphics card? hard drive?). Another thing I did try was to boot into a live disk of Ubuntu and try to launch every program I could and get on the internet but I never got it to reboot. So it sounds like to me it's a Windows thing, but I have no idea.

    I am just stuck and would like to see if any one has any ideas or could lead me in the right direction.


    • Related Answers
  • lrosa

    Could it be the power supply. I would say 50/50 chance between the power supply and a malfunction of the system board. If the system board has standard power connectors, you can try swapping the power supply with another one with a greater power output and see what happens.

    You can try unplugging the CD-ROM (and secondardy hard drives, if any) from power and see if something changes.

  • camster342

    If a LiveCD version of Ubuntu had no issues, this fact lends itself to be a malfunctioning hard drive, as Ubuntu won't touch the hard drive (except in a read-only mode) by default.

    Other diagnostic things to try :

    HardDrive SMART self-test : Using the Ubuntu LiveCD, install smartmontools, and then look up how to use the SMART self tests. You may also be able to use the Windows CD to boot into a recovery mode and run chkdsk in a mode that will test your hard drive, but someone else may have to tell you how to do this bit. Depending on the brand of hard-drive, there may also be diagnostic tools available from the manufacturer.

    RAM torture test : http://www.memtest86.com/ You can download for free from this site, including bootable CD images, or buy it on CD if you like. This may or may not be still be included in latest Ubuntu LiveCD (it used to be).

    CPU Torture test : http://www.mersenne.org/freesoft/ It is actually a program to search for very large prime numbers and compete in some sort of competition, but you don't have to do that. You can just run it to torture test your CPU, by selecting that option when you start the program. Considering the ability or not to be able to boot into windows, you may have to do this bit under the Ubuntu LiveCD too...