Have you installed any RAM, or a new processor lately? Some Bios will shut down the computer if the processor gets too hot, to stop it getting damaged, also faulty RAM can also cause premature shutdown. Any anti-virus softeware installed? Maybe it's closing down to prevent contamination.
Altair when i speak to them i will ask them to start in safe mode see how things go. Conzalis no new ram fitted although did say got warning about cpu fan not working alright. fan has been checked and no problems noted. has pc cillin on system wil get them to check appreciate all the help will try these out thanks
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