A laptop that’s grinding to a halt is frustrating, but the cause isn’t always hardware failure. Before booking a repair, there are a handful of quick checks worth doing that resolve the problem for a meaningful number of people.
Check available storage first
Windows and macOS both slow down significantly when the drive is near capacity — typically below 10–15% free space. The operating system uses free space for virtual memory, temporary files, and system operations, and when that space shrinks too far, everything slows down.
Check on Windows: Open File Explorer and look at your C: drive. If it shows less than 20GB free on a 256GB drive, that’s likely contributing to the slowdown. Empty the Recycle Bin, use the built-in Disk Cleanup tool (search for it in the Start menu), and move large files to an external drive or cloud storage.
Check on macOS: Click the Apple menu → About This Mac → Storage. The bar shows how your storage is being used. If you’re in the red, clear downloads, empty the Trash, and consider offloading photos and videos to iCloud or an external drive.
Restart properly (not just close the lid)
Closing a laptop lid puts it to sleep rather than shutting it down. Over time, applications accumulate in memory, background processes build up, and performance degrades. A full restart (Shut Down, not Sleep or Restart from a closed lid) clears this.
If you haven’t done a full restart in more than a few days, do it now and test performance again. It sounds obvious, but it resolves a surprising number of “it’s been getting gradually slower for weeks” complaints.
Check for startup programs (Windows)
On Windows, programmes installed over time often add themselves to the startup list. Open Task Manager (Ctrl + Shift + Esc), click the Startup tab, and look for programmes with “High” startup impact that you don’t need running immediately on boot. Right-click and Disable any that aren’t essential.
On macOS, go to System Settings → General → Login Items and remove anything unnecessary from the list.
Update Windows or macOS
Operating system updates sometimes include performance improvements, especially for newer hardware. On Windows, go to Settings → Windows Update. On macOS, go to System Settings → Software Update. If updates have been pending for weeks, install them and restart.
The two upgrades that make the biggest difference
If the software fixes above don’t resolve the slowdown, there are two hardware upgrades that transform performance on older laptops:
SSD upgrade: If your laptop shipped with a traditional spinning hard drive (common on machines from 2015–2020), replacing it with an SSD is the single most impactful upgrade possible. Boot times drop from minutes to seconds. Everything opens faster. It’s often the difference between a laptop feeling unusable and feeling new. See our SSD upgrade service for details.
RAM upgrade: If your laptop has 4GB or 8GB of RAM and you regularly run a browser with multiple tabs alongside other applications, adding more RAM will reduce slowdowns significantly. Not all laptops allow RAM upgrades (Apple Silicon Macs have it soldered, for example), but most Windows laptops from the past decade do.
When to book a diagnosis
If the laptop freezes randomly, shuts down without warning, overheats under normal use, or makes clicking/grinding sounds, these are hardware warning signs that won’t be fixed by software changes. A professional diagnosis will test the drive health, cooling system, and power circuitry and tell you exactly what’s needed.
Contact us or see our laptop repair service to book a diagnosis.