Sounds like it is dying, have you contacted the manufacturer?

"Oliver Gunnell" <Gunnell@bulldoghome.com> wrote in message
news:2500BF1A-3814-44B8-92BE-3C28A2262212@microsoft.com...[color=blue]
> Ok today I turned the pc on as normal
>
> The bios splash screen came up it's a DFI lanparty board btw
> and it just stuck on the post screen no error messages it just hung
>
> Well after much messing about I discovered if I leave it in this state for
> about 10 minutes it comes back alive and boots into Vista
> as normal and performance is as good as always
>
> I have tried to reflash the bios but still the same thing
> Anybody any ideas I did a google search but nobody seems to have had the
> same fault[/color]