Question about HP M490N PC Desktop

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Computer turns on leaves message and cuts off

I have a HP M490N computer. When turning on computer I can hear the fan turning on and running hard. A message appears apologizing but says that the computer cannot connect to windows; that an electrical change may have caused the problem, but there was no electrical problems to my knowledge. Screen also has on it the safe mode option but indicates that the machine is shutting down to protect the files and the computer. Once the machine cuts off, if you try to hit the on/off switch again, the green indicator light comes on, the amber light flickers on and goes immediately off and the machine turns off. If you let the computer rest for five or ten minutes it will repeat the initial message that I mentioned above in the third sentence of the post ("A message appears . . .).

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When u get into the safe mode try and run a system restore to a date earlier than 2 weeks> if that doesnt solve the problem> disconnect all the external devices from the computer> other than the keyboard, mouse and the monitor> then whole restarting tap the F1 key to enter BIOS screen> hit F5 then enter> then F10 > enter> the computer restarts

Posted on Oct 07, 2009

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This means that your cpu fan is facing some problems so its better change it or else your pc will encountered on and off. you can use it for 2-5 minutes then turned off automatically and you will notice the the lights is still on.

Posted on Oct 07, 2009

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If computer does not start normally, use this checklist to identify specific symptoms and take the recommended corrective actions to resolve the problems.Perform a Hard Reset Do these actions first to clear all temporary setting before troubleshooting the problem.Disconnect all peripheral devices and remove all USB devices and media cards Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds to drain residual charge
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  • Search www.hp.com for terms in error message.
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  • Search www.hp.com for terms in error message.
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1 Answer

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  • If possible, turn on power, press F10 to enter BIOS mode, do the corrective actions listed under Symptom 3 to run memory and hard drive tests.
  • Symptom 5: Computer displays a blue screen or continually re-starts After an error message is displayed, you can usually bypass the error and continue to run the notebook in Safe mode to install an updated BIOS or driver.
    • Search www.microsoft.com for terms in error message.
    • Search www.hp.com for terms in error message.
    • If possible, turn on power, press F10 to enter BIOS mode, and run diagnostic Memory test and Hard Drive test .
    • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and do one or more of the following:
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      • Run Repair Your Computer .
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      • Select Boot into Safe Mode and then select Uninstall recently installed programs .
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    • Search www.microsoft.com for terms in error message.
    • Search www.hp.com for terms in error message.
    • If possible, turn on power, press F10 to enter BIOS mode, and select Restore the BIOS defaults (F9) .
    • If possible, turn on power, press F10 to enter BIOS mode, and run Hard Drive Test .
    • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Last Known Good Configuration (Advanced) . .
    • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Boot into Safe Mode and then Uninstall recently installed programs .
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    Computer shuts down


    Please visit the below link to solve your problem.Due to some problems I was unable to send you the whole solution so please visit the site.

    http://www.ehow.com/how_113600_troubleshoot-computer-wont.html

    Thanks And sorry for the inconvenience.
    Please rate me for this solution if it works for you.
  • Step 2 If you're starting from a button on the keyboard, make sure the keyboard is connected to the computer.

  • Read more: How to Troubleshoot a Computer That Won't Start | eHow.com http://www.ehow.com/how_113600_troubleshoot-computer-wont.html#ixzz0szt64gb5
  • Step 4 If you can hear the computer's fan or hard-disk drive, or if you can see indicator lights on the main unit but the monitor stays dark, make sure that the monitor is connected to a working power source, that it's turned on and that it's securely connected to the computer via the video cable.
  • Step 5 If the monitor and computer have power but the computer displays a "Non-system disk or disk error" message, check to make sure you didn't leave a disk in the A: drive. If you did, eject it and restart the computer.

  • Read more: How to Troubleshoot a Computer That Won't Start | eHow.com http://www.ehow.com/how_113600_troubleshoot-computer-wont.html#ixzz0szsjH6o9
  • Step 4 If you can hear the computer's fan or hard-disk drive, or if you can see indicator lights on the main unit but the monitor stays dark, make sure that the monitor is connected to a working power source, that it's turned on and that it's securely connected to the computer via the video cable.
  • Step 5 If the monitor and computer have power but the computer displays a "Non-system disk or disk error" message, check to make sure you didn't leave a disk in the A: drive. If you did, eject it and restart the computer.

  • Read more: How to Troubleshoot a Computer That Won't Start | eHow.com http://www.ehow.com/how_113600_troubleshoot-computer-wont.html#ixzz0szsjH6o9
  • Step 4 If you can hear the computer's fan or hard-disk drive, or if you can see indicator lights on the main unit but the monitor stays dark, make sure that the monitor is connected to a working power source, that it's turned on and that it's securely connected to the computer via the video cable.
  • Step 5 If the monitor and computer have power but the computer displays a "Non-system disk or disk error" message, check to make sure you didn't leave a disk in the A: drive. If you did, eject it and restart the computer.

  • Read more: How to Troubleshoot a Computer That Won't Start | eHow.com http://www.ehow.com/how_113600_troubleshoot-computer-wont.html#ixzz0szsjH6o9
  • Step 4 If you can hear the computer's fan or hard-disk drive, or if you can see indicator lights on the main unit but the monitor stays dark, make sure that the monitor is connected to a working power source, that it's turned on and that it's securely connected to the computer via the video cable.
  • Step 5 If the monitor and computer have power but the computer displays a "Non-system disk or disk error" message, check to make sure you didn't leave a disk in the A: drive. If you did, eject it and restart the computer.

  • Read more: How to Troubleshoot a Computer That Won't Start | eHow.com http://www.ehow.com/how_113600_troubleshoot-computer-wont.html#ixzz0szsjH6o9

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    My computer is and hp and has been doing this off and on for awhile now.Some days it works great then,,, It freezes or if you can get it to come on and work at all. The other times you push the button to...


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