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Computer restarts on boot up before the screen even turns on

This is a discussion on Computer restarts on boot up before the screen even turns on within the Windows XP Support forums, part of the Tech Support Forum category. well last night my computer was working just fine, I shut down, went to bed, woke up today and turned


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Old 06-18-2011, 03:56 AM   #1
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well last night my computer was working just fine, I shut down, went to bed, woke up today and turned on my computer where it restarted after about 2 seconds, the screen didnt even get a chance to turn on. I have unplugged all the connections in the back and replugged them in, i have open it up and cleaned all the dust and removed all the hardware and replaced it all again to make sure there wasnt a part that wasnt fitted correctly. I managed to get it get all the way to windows once but my keyboard wasnt working so when i tried rebooting to get my keyboard working the same problem came up now i cant get it back on I am pretty sure windows xp has nothing to do with this as it cant even get the screen on before it is restarting

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Old 06-18-2011, 08:58 AM   #2
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Hi ShikariAtryao. Welcome to TSF!

This could be a number of issues. Bad PSU, intermittent RAM module(s), bad device in your system, etc. If you have more than one RAM module, try removing all of them except for one and try booting again. Make sure that the one module you use is in the correct slot as well. Step through that process exchanging RAM modules until you've tried them all and see if you're able to boot.

You could also disconnect devices such as your CD/DVD player (both data and power cable) and try booting again. It's basically a process of illimination. Also check the power cable to the motherboard and such.

One other thing is to check the little cables that connect usually to the edges of the motherboard. One of them is for your HDD, one if for the POWER LED, etc. There are usually several of them. Make sure they are all seated correctly as well.

Good day!

Mike

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Old 06-18-2011, 09:10 AM   #3
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Hi ShikariAtrayo,

I agree with Michael_Larsen. Try booting your computer with only the bare essentials: Power Supply, Motherboard, CPU, RAM, and Videocard.

Do you have any spare computer component parts to test on your computer such as spare Ram, Videocard, or CPU?

Hope everything works out well for you.
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Old 06-18-2011, 09:13 AM   #4
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In addition ;

Time Required:
Anywhere from minutes to hours depending on why Windows isn't starting correctly
Here's How:
  1. Restart your computer if you haven't already done so at least once since seeing this problem.
    Many things go on in the background when Windows is starting up. Sometimes things don't work exactly as they should, especially after Windows has installed updates or there were other major changes to the operating system the last time it was up and running. A restart might be all Windows needs to get back on track.
  2. Repair your Windows installation. A common reason for Windows to freeze up or reboot automatically during the Windows startup process is because one or more important Windows files are damaged or missing. Repairing Windows replaces these important files without removing or changing anything else on your computer.
    Note: In Windows 7 and Vista, this is called a Startup Repair. In Windows XP it's referred to as a Repair Installation.
    Important: The Windows XP Repair Installation is more complicated and has more drawbacks than the Startup Repair available in the other operating systems. So, if you're an XP user, you may want to wait until you've tried Steps 3 through 6 before giving this a try.
  3. Start Windows using Last Known Good Configuration. If you've just made a change to your computer that you suspect might have caused Windows to stop booting properly, starting with the Last Known Good Configuration could help.
    Last Known Good Configuration will return many important settings to the states they were in the last time Windows started successfully, hopefully solving this problem and allowing you back in to Windows.
  4. Start Windows in Safe Mode and then use System Restore to undo recent changes. Windows could freeze, stop, or reboot during the startup process because of damage to a driver, important file, or part of the registry. A System Restore will return all of those things to their last working order which could solve your problem entirely.
    Note: Depending on the reason that Windows isn't starting, you might not even be able to enter Safe Mode. Luckily, you can also perform a System Restore from System Recovery Options which is available from the Advanced Boot Options menu in Windows 7 and also from your Windows 7 or Windows Vista Setup DVD.
    Important: Please know that you will not be able to undo a System Restore if it's done from Safe Mode or from System Recovery Options. You might not care since you can't start Windows normally anyway, but it's something I wanted you to be aware of.
  5. Scan your computer for viruses, again from Safe Mode.
    A virus or other kind of malware might have caused a serious enough problem with a part of Windows to cause it to stop starting properly.
  6. Clear the CMOS. Clearing the BIOS memory on your motherboard will return the BIOS settings to their factory default levels. A BIOS misconfiguration could be the reason that Windows is freezing during startup.
    Important: If clearing the CMOS does fix your Windows startup problem, make sure future changes in BIOS are completed one at a time so if the problem returns, you'll know which change caused the problem.
  7. Replace the CMOS battery if your computer is more than three years old or if it's been off for an extended amount of time.
    CMOS batteries are very inexpensive and one that is no longer keeping a charge can certainly be the cause of Windows freezing, stopping, or rebooting during startup.
  8. Reseat everything you can get your hands on. Reseating will reestablish the various connections inside your computer and is very often a "magic" fix to startup problems like this, especially reboot loops and freezes.
    Try reseating the following hardware and then see if Windows will boot properly:
    Note: Unplug and reattach your keyboard, mouse, and other external devices as well.
  9. Check for causes of electrical shorts inside your computer. An electrical short is often the cause of reboot loops and hard freezes while Windows is starting.
  10. Test the RAM. If one of your computer's RAM modules fails completely, your computer won't even turn on. Most of the time, however, memory fails slowly and will work up to a point.
    If your system memory is failing, your computer may power on but then freeze, stop, or reboot continuously at some point during Windows startup.
    Replace the memory in your computer if the memory test shows any kind of problem.
  11. Test the power supply. Just because your computer initially turns on does not mean that the power supply is working. While it might not be common for your computer to get all the way to the Windows startup process with a damaged power supply, it does happen and is worth a look.
    Replace your power supply if your tests show a problem with it.
  12. Replace the hard drive's data cable. If the cable that connects the hard drive to the motherboard is damaged or not working then you could see all kinds of issues while Windows is loading - including freezing, stopping, and reboot loops.
    Don't have a spare hard drive data cable? You can pick one up at any electronics store or you could borrow the one that another drive, like your optical drive, is using, assuming of course that's it's the same type of cable. Newer drives use SATA cables and older drives use PATA cables.
    Note: A loose hard drive data cable can cause the same issues that a damaged one can but hopefully you checked for connection issues with the cable back in Step 8.
    Important: Make sure you've tried your best to complete the troubleshooting steps up to this one. Steps 13 and 14 both involve more difficult and destructive solutions to freezing, stopping, and continuous reboot problems during Windows startup. It may be that one of the below solutions is necessary to fix your problem but if you haven't been diligent in your troubleshooting up to this point, you can't know for sure that one of the easier solutions above isn't the right one.
  13. Test the hard drive. A physical problem with your hard drive is certainly a reason why Windows might reboot continuously, freeze completely, or stop in its tracks. A hard drive that can't read and write information properly certainly can't load an operating system properly.
    Replace your hard drive if your tests show an issue. After replacing the hard drive, you'll need to perform a new installation of Windows.
    If your hard drive passes your test, the hard drive is physically fine so the cause of the problem must be with Windows, in which case the next step will solve the problem.
  14. Perform a Clean Install of Windows. This type of installation will completely erase the drive and install Windows again from scratch.
    Important: In Step 2, I advised that you try to solve Windows-caused startup issues by repairing Windows. Since that method of fixing important Windows files is non-destructive, make certain that you've tried that before the completely destructive, last-resort clean install in this step.
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