Sounds like a problem with the new monitor. It possibility has an internal
overheating problem.
What resolution are you sending to it over what interface?
What is the make and model of the monitor?
Have you tried contacting the monitor manufacturers support staff?

"Gingbeard" <guest@unknown-email.com> wrote in message
news:f4ff34fe036e9354d84efcc3b2c27dab@nntp-gateway.com...[color=blue]
>
> Recently I have bought a gaming PC, and after a few hours of such
> gaming, my monitor goes to sleep, the PC is still running and I can
> still be playing my game... just without a monitor! The only way to get
> the monitor to work is to restart the PC.
>
> Any ideas what the problem could be? At first I suspected an
> overheating Graphics card, but could it be other things? could it be a
> RAM problem? what could cause this? Has anyone else had this problem?
>
> I would like to make it very clear that it is not a problem with Vista,
> or its power settings, as the computer remains runnings. It is also very
> unlikely to be the monitor as I bought it new yesterday
>
> Regards
> Jamie Mann
>
>
> --
> Gingbeard[/color]

I was thinking that the monitor dropped the connection with the PC's
graphics due to a problem such as overheating and the graphics card does not
try again to talk to the monitor until the PC was restarted.
Were you also outputting 1600x900 to your old monitor? If you were
outputting a lower resolution to you older monitor then your thought that
your graphics card be overheating and then dropping off line due to using
too much power from your power supply.

"Gingbeard" <guest@unknown-email.com> wrote in message
news:8d7802f7adf6d388f7ce7f38f983e25b@nntp-gateway.com...[color=blue]
>
> Just had a thought... How could it be the monitor, when it only works
> again when the PC is restarted? If it was the monitor, surely just
> unplugging and plugging it back in would do the trick?
>
>
> --
> Gingbeard[/color]

That's for sure.
What is the make and model of graphics card that you are using?
I had an ATI card several years ago that use to freeze up sometimes on heavy
load and I had to actually unplug my computer sometimes in order for it sync
back up with my monitor on a reboot.

"Gingbeard" <guest@unknown-email.com> wrote in message
news:7fa73d91159a6d539ba77c7937f2db44@nntp-gateway.com...[color=blue]
>
> I'm using a 700W PSU... surely it shouldnt have a problem with that?
>
>
> --
> Gingbeard[/color]

"Gingbeard" <guest@unknown-email.com> wrote in message
news:7fa73d91159a6d539ba77c7937f2db44@nntp-gateway.com...[color=blue]
>
> I'm using a 700W PSU... surely it shouldnt have a problem with that?
>
>
> --
> Gingbeard[/color]

I doubt that the monitor is using a 700W PSU. You must be referring to the
PSU in the computer, which has no bearing on the monitor at all.