This issue could be caused by any of the below possibilities.
issue or error.
- Hardware issue
- Heat related
- Computer virus.
with operating system.
Software issue or error
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
for your operating system. For Windows
Windows XP is designed to automatically
reboot each time an error occurs such as a BSoD
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
- From the desktop right-click
on My Computer.
- Click the Properties option.
the System Properties window click
the Advanced tab.
Advanced click the Settings button
under Startup and Recovery.
- In the Startup and Recovery
window uncheck the Automatically restart check box.
Now if the computer generates and error
it should not automatically restart and enable you to display any errors
your computer may be experiencing.
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.
Additional information about testing computers memory can be found on document
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.
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. Additional information about checking this can be found in document CH000533
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
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
computer and make sure the fan are working (processor
fan) and/or if your BIOS
the fans enter BIOS and make sure the BIOS does not report
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, additional
information about how hot your CPU should be running can be found on document CH000687
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
- Reboot the computer and enter
CMOS setup as the computer is booting. If you are not familiar with how
to enter CMOS please read through document CH000192.
- After you have loaded the computer in CMOS setup let the computer
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. Additional information about erasing
the computer and starting over can be found on document CH000186