Update your drivers. I had a similar problem with a different motherboard
and a Radeon 3450, resolved when Catalyst 8.6 was installed.
"Mike" <mikedavies621@xxxxxx> wrote in message
news:ed1beb40-5b4f-4f0d-a741-511849fd9f83@xxxxxx
Quote:
> Hi,
>
> My Vista 64 machine (Gigabyte GA-X48-DS5 mobo, Q6600 cpu, 8GB ram,
> Radeon HD2400 vga card) has a problem when it resumes from sleep.
> There is a protracted (3 seconds) buzzing noise and then the display
> shows a vertical pattern of narrow red and white stripes and the
> machine hangs. Only a reset will get it to reboot - the keyboard is
> completely dead.
>
> Any advice ?
>
> Thanks,
>
> Mike