Hello,
my system works normally for hours if i don't go online,once i connect if it is only normall mail checks and chat it works normally too,..but if i start watching some movies or video clips ,then comp restarts automatically,..i don't have any complaints while normal browsing or even gaming,using windows xp3 version,authenticated,updates regularly downloaded and no errors in registry and no troubles with a virus too,..oh! while those problem occurs ,..ie,while online and when it restarts sometimes a blue screen flashes for less than a sec,..so can't read what it says,..and after reboot the system says it has recovered from a serious error,..but no log files,..
Maybe you've got the dangerous virus in your system at this time.
Try a scanning to verify if the problem can get benefict otherwise your setting driver is corrupt.
Reinstall Windows corrrectly using guide.
