On 64-bit systems, it appears as "ACPI x64-based PC".
As of 2026, by Microsoft. While the ACPI driver itself remains stable, newer hardware (especially CPUs from 2018 onward) may lack official Windows 7 32-bit drivers. acpi x86-based pc driver windows 7 32 bit
Though official support for Windows 7 has ended, many driver catalogs are still available through the Windows Update tool. Ensure you have installed all "Optional Updates," as system drivers are frequently tucked away in that category. Important Note for 32-Bit Users On 64-bit systems, it appears as "ACPI x64-based PC"
Identifying and configuring hardware components without manual user intervention. Why it Matters for Windows 7 On 64-bit systems