Hi there... MMMMMmmmmmmmm can you be more specific ? has it recently started to do this or has it done this since you purchased the computer ? Are you trying to shut it down from the windows shutdown menu or are you pressing the power button to let windows shut it down ?? I Need more information before I can help you work out whats going on with your computer ...If its only just started to happen you may have a virus or a trojan infecting your system or your bios has become corrupted.The windows registry may have become corrupted or your power supply is faulty...the problems that could cause this are numerous , please be more specific about how you are shutting the computer down..
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First - re-seat the hard disk and reboot the computer. If the computer does not boot up then reboot and go into the BIOS configuration to see if the BIOS detects the hard drive. If it doesn't detect the hard drive then it could be faulty. Then the hard drive needs to be replaced in the computer/laptop, Windows installed and the computer or laptop's device drivers plus your programs etc. to get a functioning computer/laptop again.
Reboot essentially means restarting the computer. This is two types
1. Warm Reboot: where you go to start on windows task bar and choose shut down but when prompted choose restart. This way computer shuts down momentarily and restarts!
2. Cold Reboot: By this means you choose to shut down and again when prompted choose shut down! This makes computer off completely until restart by pressing power button.
Booting is computer Lingo for above procedures!
Decide what kind of reboot you are going to do. A soft reboot is performed the way you are “supposed” to do it. For a soft Windows reboot, go to the Start menu and select “Shut Down” or “Restart.” The computer will then shut itself down. Clicking “Restart” makes it boot up without further intervention from you.
Perform a hard reboot by pushing the computer’s power button and holding it until the computer shuts down. Wait 45 seconds and restart the computer by pushing the power button again. You may have to start up in safe mode, but that also allows you the chance to restart properly or work on programs in a safer way. This method may cause you to lose data or mess up the operation of some of your programs. But it may be the only option if your computer's hard drive is frozen.
Power down all of the computer's components. Shut off all of the peripherals you have attached to your computer, and disconnect the cables. Then, plug all of the peripherals back in, and restart your computer. This can often solve problems with your hard drive.
Purchase and install a program such as Drive Reboot Restore PC 6.0 that streamlines the hard drive reboot process. These applications help prevent the problems that can develop after repeated computer use. They also ensure that your hard drive maintains the configuration you want each time you turn it on.
Investigate what the problem may be with your hard drive. Because of its delicate nature, your hard drive can very easily be thrown off.
Your computer may not be properly cooled, if it gets to hot it will shut off. One of the safety feature to make sure your computer does not melt.
Please check your temps with a desktop utility or through your bios.
To see the error message of your computer Right click on “My Computer”>Click “Advance” Tab”>Click on “Start-up and Recovery” and make sure the box that says “Automatically reboot” is unchecked.
Then you should be able to see what the error message is, write it down and google it.
This will give you a better idea on why your computer is shutting off.
press F8 immedialty after switcing on...try to load the option "Load last good system that worked b.....etc etc" else...
shut down restart press F8 select Safe Mode...
if it starts in Safe mode and u can get to Desktop...
get Tuneup Utiltiy from my website www.sureshayyar.110mb.com
clean ur registry and try to start in normal mode...
The most common shut down problem is that the system will reboot rather than shutting down. In most cases, the reboot is triggered because Windows XP is designed to reboot after a critical failure. To stop windows from rebooting in case of a failure, you need to take the following steps:
Right click on My Computer, Select Properties, Click on advance tab, Click on Settings under Startup and Recovery, Uncheck the option Automatically Restart under System failure, Click Ok twice and try to shutdown the pc. If it shows any error code then let me know
Software issue or error Errors generated by software programs can cause a computer to reboot unexpectedly or without warning. If you are running Windows XP see the below section "For Windows XP users" before continuing.
If you are not running Windows XP or following the below steps still cause your computer to reboot without warning. Boot your computer into Safe Mode, and let the computer run in Safe Mode.
If the computer is still rebooting in Safe Mode the issue is likely not software related but something else, skip to the next section. If the computer is not rebooting in Safe Mode it is likely you have software related issue. We would recommend you run through the basic troubleshooting section for your operating system. For Windows XP users
Windows XP is designed to automatically reboot each time an error occurs such as a BSoD. Although this may be nice for errors that do not occur often, users who have a re-occurring error may wish to identify the error to troubleshoot it. Below are the steps on how this feature can be disabled and enabled in Windows XP.
From the desktop right-click on My Computer. Click the Properties option. In the System Properties window click the Advanced tab. In Advanced click the Settings button under Startup and Recovery. In the Startup and Recovery window uncheck the Automatically restart check box. Click Ok. Now if the computer generates and error it should not automatically restart and enable you to display any errors your computer may be experiencing. Hardware issue or error Any failing hardware component in your computer could cause your computer to unexpectedly generate an error and/or reboot without warning. If you have recently attempted to add a new hardware device, remove that device to make sure it is not causing your issues.
Make sure you are not encountering any hardware conflicts by viewing Device Manager for errors.
New drivers can also cause this issue, if you have recently performed any hardware driver updates you may wish to try an earlier version of the drivers.
If you have updated drivers and removed any hardware that could be causing this issue and continue to experience random reboots, it's possible that the memory is bad in the computer.
Finally, hardware devices that are not installed properly in the computer can also cause random reboots. Make sure all the cables and expansion cards are connected properly to the computer. The best way to determine this is to disconnect and reconnect all cables and expansion cards. Computer virus Computer viruses such as the blaster virus are written to reboot your computer without warning. Usually these viruses will make the computer reboot ever 5, 10, 15 or 30 minutes after the computer has booted.
If you believe your computer may be infected with a virus or are uncertain if your computer is infected with a virus make sure your virus scanner definitions are up to date.
Heat related issue Many computer today are designed to turn off or automatically reboot if the computer, processor, or other device in your computer gets to hot. If you have heard any abnormal noises coming from your computer recently such as a high squealing this could indicate a fan may be failing in your computer.
You can first start by verifying the fan on the power supply is working by examining the back of the computer and seeing if the fan is moving and moving smoothly. For all other fans in the computer you will need to either open the computer and make sure the fan are working (processor fan and case fan) and/or if your BIOS monitors the RPM of the fans enter BIOS and make sure the BIOS does not report any errors.
Users may also be able to determine how hot their computer is by onboard thermal sensors, if your computer comes equipped with these sensors make sure your CPU is not running to hot. Issue with operating system If after following each of the above recommendations your computer still continues to reboot it is likely that you are experiencing a Microsoft Windows operating system related issue that cannot be explained. To help make sure this is the case please try the below steps.
Reboot the computer and enter CMOS setup as the computer is booting. After you have loaded the computer in CMOS setup let the computer sit. If the computer does not reboot while letting the computer sit in CMOS it is likely that you are in fact experiencing an issue with Microsoft Windows and it is recommend that if you have followed all of the above recommendations that you reinstall your version of Microsoft Windows.