Hi. I have a original disk of windows vista business upgrade. Two weeks ago I
intalled over a windows xp. No problem at all.

Yesterday I hard disk died. Today I intall the same original windows xp and
I try to upgrade to windows vista, but a error appears tells me that Vista
must be installed on c omputer that supports ACPI.

Well, Vista was right, on by BIOS setup I had ACPI disable. My mistake. But
I already Enable it. I tried aain to upgrade to Vista but the same message
returns.

Do I must install XP with ACPI enable and only then upgrade to Vista???

Do I need to format the computer again?

Regards,
Marco

"Marco" wrote:

> Hi. I have a original disk of windows vista business upgrade. Two weeks ago I
> intalled over a windows xp. No problem at all.
>
> Yesterday I hard disk died. Today I intall the same original windows xp and
> I try to upgrade to windows vista, but a error appears tells me that Vista
> must be installed on c omputer that supports ACPI.
>
> Well, Vista was right, on by BIOS setup I had ACPI disable. My mistake. But
> I already Enable it. I tried aain to upgrade to Vista but the same message
> returns.
>
> Do I must install XP with ACPI enable and only then upgrade to Vista???
>
> Do I need to format the computer again?
>
> Regards,
> Marco

Sometimes you can change the HAL to accomodate the resetting of ACPI. There
are some KBs on this. However, you are better off doing a repair install of
XP at best.

Hi Danman. I guess so. At the moment I'm choosing in with partition I want to
install XP.

I'll try. If you want I can leave here a post with the result.

MS

"danman32" wrote:

>
>
> "Marco" wrote:
>
> > Hi. I have a original disk of windows vista business upgrade. Two weeks ago I
> > intalled over a windows xp. No problem at all.
> >
> > Yesterday I hard disk died. Today I intall the same original windows xp and
> > I try to upgrade to windows vista, but a error appears tells me that Vista
> > must be installed on c omputer that supports ACPI.
> >
> > Well, Vista was right, on by BIOS setup I had ACPI disable. My mistake. But
> > I already Enable it. I tried aain to upgrade to Vista but the same message
> > returns.
> >
> > Do I must install XP with ACPI enable and only then upgrade to Vista???
> >
> > Do I need to format the computer again?
> >
> > Regards,
> > Marco
>
> Sometimes you can change the HAL to accomodate the resetting of ACPI. There
> are some KBs on this. However, you are better off doing a repair install of
> XP at best.