memory usage by background processes

High memory use by background processes is not automatically a leak, because Windows deliberately uses available RAM for cache and releases it when applications need it. In Task Manager, sort by Memory and compare the process working set over time; also check Performance, Memory for committed, cached, paged-pool, and available values. Resource Monitor can show which process is accumulating committed memory. Do not disable unfamiliar Windows services merely to lower the percentage. Update or uninstall the application whose usage continually grows, then restart and confirm whether memory returns. Review Startup apps and disable only nonessential entries. A clean boot is useful if no single process is obvious, and a Defender scan rules out common unwanted software. If paged or nonpaged pool keeps increasing, update device drivers from the manufacturer. Record screenshots and a reproducible time window before escalating, because the process name and growth pattern determine the next diagnostic step.