A few evenings ago I was working on my computer (emachine) with no problems. The next morning it was frozen with on 'countdown' screen to reboot. I had to hard boot to get it to do anything. When it starts booting, the E logo comes up with my options to go to bios etc.... then it goes to the countdown screen. Whether I chose to boot normally or using last good config, it would just repeat the process of going to E logo screen. I got frustrated and turned it off for most of the day. When I turned it back on, it did the same thing, but this time when I chose last good config it actually start booting up. There was a microsoft error report, so I sent it. I tried to go download a critical windows update, but at approx 75% completion....it rebooted itself. This started the cycle over, however I was having much better luck at least getting it to boot all the way at least a couple of times, so that I could back up some recent files. I tried to restore, but it never seems to get to complete either. Essentially, at this point, I can get it to boot up, but if anything is running it won't take it long to start rebooting itself. Sitting idle it takes it longer to start rebooting. Please help!
After doing what sandrew mentions in the previous post, and still getting the same problem, try resetting the BIOS (there should be a small jumper with three positions on it and a cap on two of them, close to the CMOS battery. you have to move it to the position that's open. If it is on position 1-2 , move it to position 2-3 for a few seconds and then back).
if you post your exact model I can probably tell you where the reset jumper is.
You can also try removing the memory from it's socket and putting it back again
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The only thing I can suggest is to disconnect everything and remove the battery for a few minutes. Then, reinstall the battery, connect your cables and reboot, in the hope that everything will reset itself.
Power off the computer, then restart it. As soon as you see the eMachines logo appear on the monitor screen, press the "left-Alt" and "F10" keys simultaneously. Wait a few seconds for the Windows boot screen to appear, then press the "Enter" key.
Click the "Restore Operating System to Factory Defaults" option after the eRecovery Management window appears. In the Notice window, read the warning that states all information on the drive will be lost, then click the "Next" button.
Click "Next" in the Restore Destination window, then click "OK" in the final confirmation window. The eRecovery Management utility formats your main system drive and reinstalls the original software that shipped with your computer. A progress bar notifies of you of the current progress of the recovery. The recovery utility may prompt you to restart your computer several times during the recovery process. Restart the computer when prompted. The computer reboots automatically after the recovery finishes and launches the Windows First Time Setup. The recovery takes between 10 minutes and one hour depending on which model eMachines computer you own.
Follow the onscreen prompts to customize and personalize the Windows installation on your eMachines computer. Log in to Windows with the username and password you choose during Windows Setup.
To start with, you should check all your hardware. A loose connection somewhere or a faulty piece of hardware could be the reason, the computer keeps rebooting itself. In case your RAM stick is not fitted properly, or is corrupt, the computer displays an error message on the screen and keeps rebooting itself. The same problem occurs with a hard disk. You can use 'Memtest86' to run a hard drive check.
You may at times come across an error message on your screen, like a system failure error, before rebooting by itself. There is a particular solution to this type of problem. You should first go to the My Computer icon and right click on it. Select properties, and a window will appear on your screen. Click Advanced tab → Start Up and Recovery → Settings. After clicking the settings option, you will have to uncheck the box next to Automatically Restart. Click OK twice. This will prevent the computer from rebooting itself and you can redress the issue.
A different way to tackle the problem of 'computer keeps rebooting itself', would be to restart your computer in the Safe Mode. Allow the computer to boot fully and let your windows operating system load fully. Now, if your computer keeps rebooting itself even in the safe mode, there is a problem either with the operating system or hardware. And if your computer is not rebooting itself in safe mode, the problem is related to certain software.
Over heating is another reason why your computer keeps rebooting itself. Not many people pay attention to this aspect though. The fan responsible for keeping the CPU cool, may be malfunctioning or there could be dirt settled between the fan and CPU. Any one of these could be the reason for your problem. Either clean the fan area, or replace it if necessary. Try providing proper ventilation for your CPU, so that it stays as cool as possible.
You computer could reboot on it's own if you have installed improper drivers. Right click on the 'My Computer' icon, and click on 'Properties' from the menu list which appears. A new window will open. Select the 'Hardware' tab, and click on 'Device Manager'. A list will be displayed on the screen in which you will have to check all categories. Is you see any red or yellow warning icons, make sure you update that particular driver from the internet.
First of all remove ant cd from drive when booting up uinless you are using a bootable windows disk. if the problem still persist when then computer starts booting up keep pressing f8 until you get the choice to go in to safe mode. Once in safe mode choose the option when prompted go to system restore points and restore the computer to a date availabe wich is before the date of the problems.
i would try taking to motherboard battery out for 10 minutes to reset the bios.....then try booting again.......if not then the bios could possibly be fried.....i had teh same problem with a computer i built myself......
please clarify this sequence of events:
"on AC power,it seems to be working fine. But the problem occurs when I try restart it on the next morning"... was it restarted next morning on AC power or battery...which one?