How to Speed Up a Slow PC in 5 Minutes

If your PC takes over a minute to boot, the fans spin up after a few Chrome tabs, and switching windows feels sluggish, it is tempting to assume you need a new computer. In most cases, the real culprit is years of accumulated software clutter, not the hardware itself. This guide walks through five quick checks for Windows 10 and 11 desktops and laptops — phone storage cleanup is covered in a separate post, so this one stays focused on the PC.

1. Trim Your Startup Programs

The most common cause of slow boot times is too many programs launching with Windows. Cloud sync apps, messaging clients, game launchers, and printer utilities all grab memory and disk activity from the moment you sign in.

Right-click the taskbar (or press Ctrl + Shift + Esc) to open Task Manager, then switch to the Startup apps tab. Look at the Startup impact column — for items marked High that you do not actively need, right-click and choose Disable.

Good candidates to disable:

Cloud sync apps such as OneDrive, Dropbox, and Google Drive (launch them on demand)
Messaging apps like Slack, Discord, and Teams
Game launchers (Steam, Epic Games, Battle.net)
Printer and scanner helper utilities
"Quick start" helpers bundled by manufacturers

Disabling does not uninstall the app — it only stops it from auto-launching. Open it manually when you need it.

2. Free Up Disk Space

Windows performs noticeably worse when the system drive (usually C:) is nearly full, because temporary files and the page file have nowhere to grow. Even on an SSD, keeping 10-20% free space is a good rule.

Open Settings > System > Storage to see what is using space. Click into Temporary files and you can safely clean items like:

Previous Windows installation files (sometimes tens of gigabytes after an upgrade)
Windows Update cleanup
Recycle bin, downloads, temporary internet files
Thumbnail cache and delivery optimization files

Turn on Storage Sense to have Windows automatically clear out the recycle bin and old downloads on a schedule. Set it once and forget it.

3. Reduce Visual Effects

Windows applies window animations, shadows, and transparency by default. On a modern desktop these are fine, but on lower-spec or older laptops, turning them off can make the UI feel noticeably snappier.

Search for View advanced system settings, click Settings under the Performance section, and switch to the Visual Effects tab.

Adjust for best performance: disables every effect — fastest option
Custom: keep just "Smooth edges of screen fonts" and "Use visual styles on windows and buttons" for a balance of readability and speed

You can also visit Settings > Accessibility > Visual effects and turn off transparency and animation effects for a similar boost.

4. Manage Background Apps and Notifications

Many apps continue running in the background even when you are not using them. Under Settings > Apps > Installed apps, click the three-dot menu next to an app and choose Advanced options to set its Background apps permissions to Never or Power optimized for things you rarely use.

Notifications are worth pruning too. Visit Settings > System > Notifications and turn off promotional messages from shopping, gaming, or news apps. Fewer interruptions means fewer micro-stalls, plus better focus.

5. Check for Malware and Browser Extensions

A surprising number of "suddenly slow" PCs are infected with adware or potentially unwanted programs (PUPs), often bundled with free software downloads or installed through sketchy browser extensions.

Windows Security: open it from the Start menu and run Virus & threat protection > Quick scan. The built-in Defender catches most common threats.
Browser extensions: in Chrome or Edge, open the menu and go to Extensions. Disable or remove anything you do not remember installing or that requests excessive permissions.
Hijacked start page or search engine: if your browser opens to an unfamiliar search site, that is a PUP signature. Reset the start page and default search engine in browser settings.

When Software Tweaks Are Not Enough

If all five steps still leave your PC feeling sluggish, the bottleneck is hardware. The single biggest upgrade is swapping a hard drive for an SSD — an old laptop with a spinning HDD will boot and launch apps like a brand-new machine after the swap. The next-best value is adding RAM (move from 8 GB to 16 GB if you are doing anything more than light browsing).

If you would also need a new CPU or motherboard, the cost gets close to a new PC anyway, and that is the point at which buying a replacement makes sense.