Pc frequently restart?

n addition to all previous information, open your case and check your capacitors, they look like this.........

Good capacitors.......
http://www.headwize.com/images4/gilmore3...

Bad capacitors........
http://www.auroracomputer.ca/images/bad_...

If they appear as those in the second pic, then your board needs to be replaced.

Your capacitors go bad due to excessive heat.



11

1. You may have viruses present in your system.
Solution: Scan your computer using an Anti-Virus program. If you don't have one, click here to download a free version http://www.download-zone-free.com/avg/

2. Hardware component may not be securely tight or is not properly installed.
Solution: Check your components (Video Card, Memory, PCI Cards) to see if they are properly installed.

3. One or two cables may be loose.
Solution: Check your cables (IDE, power plugs) to see if they are secured.

4. Damaged Components
Solution: Bring to PC repair shop if you don't know how to diagnose.

5. Corrupt system files.
Solution: Pop in your OS CD and run a repair.

6. Power Supply is not sufficient or components not getting enough power.
Solution: Buy and install a new power supply.

7. CPU Overheating.
Solution: Buy and install a new heating solution (liquid coolant or a better heatsink/fan)

8. You may have Spywares present in your system.
Solution: Download, install, and run an anti-spyware program..
To download a free version, click here http://www.microsoft.com/downloads/detai...

9. Incorrect/imcompatible drivers are installed.
Solution: Log system errors and find the source. Or if you installed a new device and uninstall it.

10. A system reboot is scheduled.
Solution: Disable this task.

Alternative Solution:
Go to your system properties / advanced / startup and recovery.
There's an option there that makes the system restart eveytime there's a system faillure. Make sure it's disabled or logging is enabled to log possible errors.





111

Windows restarts without warning.

This issue could be caused by any of the below possibilities.

Software issue or error.

Hardware issue or error.

Heat related issue.

Computer virus.

Issue with operating system.

Answer:

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. Additional information and help with getting into
Safe Mode can be found on document CHSAFE.

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. Additional information about Device Manager can be found on
our Device Manager page.

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.
Additional information and help with computer drivers can be found on our
drivers page.

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.

tips : you may to repair you operating system. don't forget backup your files before you do it.

Looks like you have automatic restart enabled in your XP. Disable it using these steps
1. Right-click My Computer, and then click Properties.
2. On the Advanced tab, click Settings under Startup and Recovery.
3. Clear the Automatically restart check box under System failure, and then click OK. The error message should remain on the screen so that you can record the error information.
Now when the system encounters and error...it will show a Blue Screen with error. Note the complete error on a paper. It will be a long one but you have to note it down in full.

In the end if I had to make a guess, I would say that your hard disk is having problems. If it had developed bad file structure then imho you should format and reinstall.