Acer Aspire One NAV50 (commonly known as the ) does not have official 64-bit Windows 7 drivers directly from Acer. While the hardware includes an Intel Atom N450 processor that supports 64-bit architecture, official support was primarily focused on 32-bit (x86) versions of Windows XP and Windows 7. Microsoft Learn Official Driver Source

The Easiest Method: Use Snappy Driver Installer (SDI)

Since hunting individual drivers is tedious, use Snappy Driver Installer Origin (free, open-source, no malware).

Power management / Hotkeys

Acer Aspire One NAV50 (often listed as the Aspire One 532h ) was primarily designed for 32-bit operating systems like Windows 7 Starter or Windows XP. While its Intel Atom N450 processor is 64-bit capable, official 64-bit driver support from Acer is extremely limited, as the official site typically only lists 32-bit versions for this specific model. Official Driver Source