If we take a quick look at (part of) the OP's 'dmesg' output;
ACPI: RSDT (v001 INTEL D915GAV 0x20050429 MSFT 0x00000097) @
0x00000000c7730000
ACPI: FADT (v002 INTEL D915GAV 0x20050429 MSFT 0x00000097) @
0x00000000c7730200
ACPI: MADT (v001 INTEL D915GAV 0x20050429 MSFT 0x00000097) @
0x00000000c7730390
ACPI: MCFG (v001 INTEL D915GAV 0x20050429 MSFT 0x00000097) @
0x00000000c7730400
ACPI: ASF! (v016 LEGEND I865PASF 0x00000001 INTL 0x02002026) @
0x00000000c7736020
ACPI: TCPA (v001 INTEL TBLOEMID 0x00000001 MSFT 0x00000097) @
0x00000000c77360c0
ACPI: WDDT (v001 INTEL OEMWDDT 0x00000001 INTL 0x02002026) @
0x00000000c77360f4
ACPI: DSDT (v001 INTEL D915GAV 0x00000001 INTL 0x02002026) @
0x0000000000000000
No NUMA configuration found
Faking a node at 0000000000000000-00000000c772f000
Bootmem setup node 0 0000000000000000-00000000c772f000
No mptable found.
On node 0 totalpages: 816943
===============
We see MSFT (Microsoft) all over the place as well as INTL (Intel ?) --
I suppose this machine may be a Dellio (perhaps HP or Compaq)? or
atleast one that has one of those stickers on the case that says
"Designed for use with MS Windows [version]"