Hi there,

I want to change the HAL driver on my Dell Dimension 2350 computer (Windows XP Professional SP1, Pentium 4 2GHz, 256Mb RAM). I am trying to run a third party application which gives me the following error message "Error: Possibly multiprocessor kernel installed". When I checked Device Manager I noticed that I have "APCI Uniprocessor" HAL which supports multiprocessor systems. Though my current system has a single processor installed on a single processor motherboard. I want to switch to "ACPI PC" HAL which applies to a single processor motherboard with a single processor.

I tried to manually force in a system HAL during an upgrade installation of Windows XP. During the text-mode phase of the setup program, when you receive the following message across the bottom of the screen "Press F6 if you have to install a third-party SCSI or RAID driver", you can press F5. When I pressed F5 I was supposed to get a complete list of HAL drivers. But I got only two options: "Standard PC" and "Other".

I need to install the "ACPI PC" HAL and since it was not available from the list I chose "Other" and I got the following message "Setup could not determine the type of the computer you have. Please insert the disk labeled manufacturer supplied hardware support disk into drive A:". I have been told by the third party application technical support that I can fix this problem if I changed the HAL because their application does not support hyper threading. My question is how can I get an "ACPI PC" HAL for a Dell Dimension 2350 computer?

I would appreciate any help. Thanks.