Is Ubutu on the same drive as Vista?
Do you have Vista SP2 installed?
Is there any possibility that the Hitachi drives uses more power then the WD
drive did?

"Dementis" <guest@unknown-email.com> wrote in message
news:0317fb31becd9670f6e2bee9f4fe940f@nntp-gateway.com...[color=blue]
>
> I have recently installed a Hitachi 7k1000.B hard drive as a replacement
> for a WD one. ever since I have done this Vista shuts down within 10 or
> 15 minutes unexpectedly and without an error message. I am dual-booting
> with Ubuntu 9.04 "Jaunty" which has been up and running for almost 80
> hours now on a geforce8200 motherboard with onboard sound and video.
> This seems to be Vista specific. I have tried blowing out my case,
> upgrading bios, checking connections, reseeding RAM and HD, checking
> power supply, and system temp is normal. I can easily rule out that this
> is NOT a hardware issue but rather a windows issue. I have searched
> google for a few hours now without finding anything useful. I have Vista
> installed, but it is unuseable due to the frequent shutdowns. Does
> anybody have any idea as to why this is happening?
> Thanks,
> Dementis
>
>
> --
> Dementis[/color]