How to Speed up a Computer

A Step-by-Step Guide

A slow computer costs you more than just time.

Missed deadlines, frozen screens mid-presentation, and the constant frustration of waiting for a page to load—it all adds up. Studies show that tech problems like slow computers can reduce worker productivity by up to 40%.

The good news? You don’t need to buy a new machine.

Most performance issues come down to a handful of fixable problems: too many programs running in the background, a cluttered hard drive, outdated hardware, or hidden malware quietly draining your system’s resources.

This guide walks you through four practical steps to get your computer running faster—starting with the quickest wins and working up to more involved fixes.

By the end, you’ll have a clear plan to restore your computer’s performance and keep it running smoothly long-term.

Step 1: Manage Startup Programs and Background Processes

Every time your computer boots up, it loads a list of programs in the background—many of which you probably never use. Over time, this list grows, and your system spends more resources just getting started.

How to disable startup programs on Windows

Press Ctrl + Shift + Esc to open Task Manager.
Click the Startup tab.
Right-click any program you don’t need at startup and select Disable.

How to disable startup programs on Mac

Go to System Settings > General > Login Items.
Select any unnecessary apps and click the minus (–) button to remove them.

Focus on apps like Spotify, Discord, Skype, or cloud backup tools—anything that doesn’t need to run immediately when you log in. Disabling even two or three programs can noticeably cut down your boot time.

While you’re at it, check what’s currently running in the background. On Windows, the Processes tab in Task Manager shows which apps are consuming the most CPU and memory. On Mac, use Activity Monitor (found in Applications > Utilities). Close anything that’s eating up resources without a good reason.

Step 2: Clean Up Disk Space and Uninstall Unused Software

A hard drive that’s nearly full will slow your system down significantly. Aim to keep at least 15–20% of your disk space free at all times.

Free up space on Windows

Open Settings > System > Storage to see what’s taking up space.
Run Disk Cleanup (search for it in the Start menu) to remove temporary files, system junk, and old Windows update files.
Empty your Recycle Bin and clear your browser’s cache and download folder.

Free up space on Mac

Go to Apple Menu > System Settings > General > Storage.
Use the built-in recommendations to optimize storage, empty the trash automatically, or offload unused files to iCloud.

Uninstall what you don’t use

Old software takes up storage and sometimes runs background processes without you realizing. On Windows, go to Settings > Apps and sort by size or install date to find programs worth removing. On Mac, drag unwanted apps from the Applications folder to the Trash, then empty it.

A good rule of thumb: if you haven’t opened it in six months, you probably don’t need it.

Step 3: Upgrade Your Hardware

Software fixes go a long way, but aging hardware has its limits. If your computer is several years old and still running slowly after the steps above, a hardware upgrade could make a dramatic difference—often at a fraction of the cost of a new machine.

Add more RAM

RAM (Random Access Memory) determines how many tasks your computer can handle at once. Most budget laptops ship with 4–8GB of RAM. Upgrading to 16GB makes a noticeable difference for everyday multitasking, especially if you regularly use multiple browser tabs, spreadsheets, or creative software.

Before purchasing, check whether your RAM is upgradeable—some laptops, particularly newer Mac models, have RAM soldered directly to the motherboard. A quick search of your model number will confirm this.

Switch to an SSD

If your computer still uses a traditional hard drive (HDD), replacing it with a Solid State Drive (SSD) is the single biggest speed upgrade you can make. SSDs have no moving parts, so they read and write data far faster. Boot times that used to take two minutes can drop to under 20 seconds.

SSDs are widely available and relatively affordable. A 500GB SSD typically costs between $40–$80, and installation is straightforward on most desktops and older laptops.

Step 4: Scan for Malware and Optimize System Settings

Malware—viruses, spyware, and other malicious software—can run quietly in the background, consuming CPU power and slowing everything down. Even if your computer seems fine, a routine scan is worth running.

Run a malware scan

Windows: Windows Defender (built into Windows 10 and 11) offers solid protection. Open it via Settings > Privacy & Security > Windows Security > Virus & Threat Protection and run a full scan.
Mac: Macs are less vulnerable but not immune. Free tools like Malwarebytes can detect and remove threats that macOS’s built-in protection might miss.

Adjust your visual settings

Windows includes animated effects and transparency settings that look polished but use unnecessary resources on older hardware. To turn these off:

Search for “Adjust the appearance and performance of Windows” in the Start menu.
Select “Adjust for best performance” or manually uncheck effects you don’t need.

Keep your operating system and drivers updated

Outdated software can cause compatibility issues and performance slowdowns.

On Windows, check for updates via Settings > Windows Update. On Mac, go to System Settings > General > Software Update. Also update your graphics drivers, especially if you notice sluggish performance in video or graphics-heavy tasks.

Keeping Your Computer Fast Long-Term

Speeding up your computer isn’t a one-time fix. A little regular maintenance goes a long way.

Monthly: Empty your Recycle Bin, clear browser caches, and close background apps you’re not using.
Every 3–6 months: Run a disk cleanup, check for software you no longer need, and scan for malware.
Annually: Review your hardware. If your computer is more than five years old and struggling, it may be time to consider an SSD upgrade or RAM boost.

Start with Step 1—it takes less than five minutes and often delivers immediate results. Work through the rest at your own pace. Most of these fixes cost nothing, and the ones that do (like an SSD upgrade) typically pay for themselves quickly in time saved and frustration avoided.

A faster computer is within reach. You just need to know where to look.