Top 7 Ways to Speed Up a Lagging Windows 10 PC in 2026

Picture this: you’re halfway through a critical report, the screen’s blinking like it’s on a treadmill, and every keystroke feels like a drag race. Your laptop is the one that keeps asking, “Are you sure you want to shut down?” Remember that afternoon when you hit “Run” on that spreadsheet and came back to a blue screen of death? Yeah, that’s the frustration I’ve been helping clients avoid every single day.

In Windows 10, performance hiccups are the result of a slow dance between the operating system, background services, and the software you actually use. I’ve seen this a million times—hardware aging, software bloat, and those sneaky “starter apps” that won’t quit. The right fixes, however, are surprisingly straightforward once you know where to look.

Below are seven practical steps that will have your machine running like a champ again. Trust me on this one, the changes are tiny but the payoff is huge.

Check for the latest updates. Windows ships a smorgasbord of performance fixes every month. Open Settings, click Update & Security, and hit Check for updates. Don’t skip the optional ones—especially the “KB” updates for memory improvements and the “Virtual Hard Disk” patches that can shave milliseconds off every read/write operation.
Turn off unnecessary startup programs. Press Ctrl+Shift+Esc to open Task Manager, go to the Startup tab, and disable anything that’s not essential: social media bots, game launchers, file backup services. A single background sync can add up to a second per second of lag.
Adjust visual effects. Go to Control Panel, System, Advanced system settings, Performance Settings. Pick “Adjust for best performance” or manually uncheck animations. Those fancy parallax effects look cool but drain 15–20% of your CPU cycles on older machines.
Free up disk space and defragment. Open Settings, Storage, click “Free up space now.” The built‑in disk cleanup tool is a lifesaver. Afterwards, run Windows Disk Defragmenter (or preferably Optimize Drives) to move fragmented data closer together—this is especially useful for HDDs; SSDs don’t need it.
Add more RAM or swap to an SSD. If your computer still can’t jog past MS Paint, it’s likely a memory bottleneck. Most older notebooks cool down if you add a second DIMM. If you’re lucky with a 64‑GB a year old, consider a quick swap to a 1TB NVMe SSD—swap speeds are faster than any CPU tweak.
Disable telemetry and background sponsors. Open Settings, Privacy, Background apps, and toggle off everything you don’t use. Then, for a deeper clean, run the “Configure Telemetry” registry tweak that removes the “Analytics” and “Feedback” services. This cuts the data ping to Microsoft’s servers from background to a whisper.
Use PowerShell to tweak the page file. Open PowerShell as admin, run `wmic OS get totalVisibleMemorySize /value`. If your computer has < 8GB, set a custom page file size: `wmic pagefile set /size 4096,4096`. This ensures your system has a solid virtual memory cushion during heavy multitasking.

Now for some insider tricks you won’t find in generic tutorials:

1. Windows 10’s “Background Intelligent Transfer Service” (BITS) can sometimes sneak up on you. Disable it by typing `services.msc`, finding BITS, right click, Properties, and set Startup type to Manual. That saves energy and bandwidth each tick.

2. Dealing with old network drivers? Update them via Device Manager, but then enable “Allow this device to wake the computer” on your network adapter. It keeps the link alive without boomeranging the whole OS each time something jumps up.

3. Last but not least, it’s easy to forget the “Turn off system restore” trick—and no, I’m not telling you to delete your restore points. I mean pause it for a few days while you’re running major updates or heavy code compilations. The temporary stop can shave off a noticeable pause during startup.

After you stack these changes, your Windows 10 machine should feel like it just got a fresh coat of paint. If the lag persists, head over to the Contact Us page. We’ve seen the rare cases where a BIOS update or a clean reinstall is the only cure, and we’re happy to guide you through it.