computer hang up and restart by its own?

Answer 1

Try this XP self repair:
http://www.informationweek.com/shared/printableArticle.jhtml?articleID=189400897

Answer 2

This was happening to me every time I went on the net, I'd maybe get 3 minutes max before to computer restarted itself. I eventually sent the error message that I was continiously presented with to Mircosoft and had an immediated reply. Apparently my modem driver needed updating, I went to the appropriate site for my brand of modem, downloaded an update and things have been ok since. Hope that helps.

Answer 3

computer hangs can be for various reasons for example 1.registry errors 2.viruses 3.hard drive problems
theres also many ways to fix this problem,the most obvious is to re-install windows but this may be a bit harsh
the restarting of your p.c can be stopped by right clicking my computer>advanced>start up and recovery>uncheck the box "automatically restart" then click apply and ok
this will stop the restarts,however it wont stop the problem
run a anti-virus scan and also a anti-spyware scan,this may be the cause of the problem more so a virus,and also try using a regsitry fixing program
a good registry fixing tool is registry mechanic from http://www.pctools.com/registry-mechanic/,With Registry Mechanic you can safely clean, repair and optimize the Windows® registry with a few simple mouse clicks! Problems with the Windows® registry are a common cause of Windows® crashes, slow performance and error messages. By using a registry cleaner regularly and fixing registry errors your system should not only be more stable but it will also help improve your system performance without expensive hardware upgrades. Learn more about the importance of a clean registry with our registry insight.
also another excellent utility is "desktop mechanic" from http://www.pctools.com/desktop-mechanic/,With Desktop Mechanic, you can safely clean, repair and optimize the Windows registry with a few simple mouse clicks. Problems with the Windows registry are a common cause of Windows crashes, slow performance and error messages. Desktop Mechanic uses a high-performance detection algorithm to quickly identify missing and invalid references in your Windows registry. These problems can occur for many reasons including incorrect or incomplete removal of software, missing or corrupt hardware drivers and orphaned startup programs. Within a few easy steps, Desktop Mechanic will scan your entire registry for any invalid entries and list the registry errors found so you can choose to selectively clean each item or automatically repair all errors. Desktop Mechanic can also make a backup of any repairs made so that you can easily recover any changes if required.
both of these are avalible on trail downloads,this should give you ample time to find and fix your p.c,s problem
i hope this has helped,however any problems let me know
good luck mate!

Answer 4

Do a manual restart in safe mode and do a FULL virus scan. It sounds very dodgy to me unless you had been updating something, in which case, a restart may have been necessary to complete the update.

Answer 5

The operating system could be corrupted, or your power supply unit is on it's way out. Try re-installing the operating system

Answer 6

Sure, why not.