Slow performance and security worries can turn using your PC into a daily frustration. Anyone with a Windows 10 computer knows how quickly clutter builds up or updates get missed, leaving systems vulnerable and sluggish. Addressing these basics builds a solid foundation for speed and peace of mind. Here are the smart steps to clear junk, manage updates, and lay the groundwork for a more reliable, secure Windows 10 experience.
Step 1: Prepare Your PC for Optimization
Before you dive into optimization, your PC needs a proper foundation. Think of this step as clearing the clutter before you start cleaning. You'll want to address software updates, check your system health, and remove unnecessary files that slow things down.
Start by installing all pending Windows updates. Keeping software up-to-date protects against security vulnerabilities while improving performance. Windows 10 handles most updates automatically, but manually checking ensures nothing is missed.
Here's what to do:
1. Press Windows key + I to open Settings
2. Navigate to Update & Security
3. Click Check for updates
4. Install any available updates and restart if prompted
5. Enable automatic updates to stay protected going forward
Next, assess your system's current performance using the built-in diagnostic tool. The Windows System Assessment Tool (WinSAT) evaluates your processor, memory, graphics, and disk performance, giving you a baseline to measure improvement against after you're done.
Check these key areas before moving forward:
Available disk space — aim for at least 15% free on your C: drive.
Running background programs — open Task Manager and look at what's consuming CPU and memory.
Temporary files and cache buildup — these are often the biggest quick win.
Old installations and downloads — programs you forgot you installed.
Enabling Windows 10's Storage Sense feature at this point is smart — set it to run monthly and it will automatically delete temporary files and old Windows installations, reducing manual cleanup work going forward.
Start by installing all pending Windows updates. Keeping software up-to-date protects against security vulnerabilities while improving performance. Windows 10 handles most updates automatically, but manually checking ensures nothing is missed.
Here's what to do:
1. Press Windows key + I to open Settings
2. Navigate to Update & Security
3. Click Check for updates
4. Install any available updates and restart if prompted
5. Enable automatic updates to stay protected going forward
Next, assess your system's current performance using the built-in diagnostic tool. The Windows System Assessment Tool (WinSAT) evaluates your processor, memory, graphics, and disk performance, giving you a baseline to measure improvement against after you're done.
Check these key areas before moving forward:
Available disk space — aim for at least 15% free on your C: drive.
Running background programs — open Task Manager and look at what's consuming CPU and memory.
Temporary files and cache buildup — these are often the biggest quick win.
Old installations and downloads — programs you forgot you installed.
Enabling Windows 10's Storage Sense feature at this point is smart — set it to run monthly and it will automatically delete temporary files and old Windows installations, reducing manual cleanup work going forward.
Step 2: Clean Junk Files and Unnecessary Data
Your PC collects digital debris over time that silently drains performance. Temporary files, caches, and outdated program data accumulate in the background, consuming storage space and slowing your system down. Cleaning these out is one of the fastest ways to reclaim speed.
Start with Storage Sense, Windows 10's built-in cleaning tool. This feature automatically removes temporary files, system junk, and old Windows installations.
Here's how to enable and configure Storage Sense:
1. Open Settings and go to System
2. Click Storage in the left sidebar
3. Toggle Storage Sense to the On position
4. Click Configure Storage Sense or run it now
5. Set automatic cleanup to run monthly
6. Choose which file types to delete automatically
If you want immediate results, use Disk Cleanup for a one-time deep clean. Search for it in Start, run it on your C: drive, then click "Clean up system files" for a deeper pass that also removes old Windows Update packages — often several gigabytes on their own.
You can also manually clear specific junk categories:
Temporary files — press Win+R, type
Browser cache — in Chrome: Settings → Privacy → Clear browsing data → Cached images and files.
Old installation files — check Downloads and the Windows.old folder if present.
Recycle Bin — right-click the desktop icon and empty it.
Duplicate files — scan your Downloads and Pictures folders.
After running Disk Cleanup or Storage Sense, check your available disk space in Settings to confirm it worked. You should notice a meaningful increase in free storage immediately.
Start with Storage Sense, Windows 10's built-in cleaning tool. This feature automatically removes temporary files, system junk, and old Windows installations.
Here's how to enable and configure Storage Sense:
1. Open Settings and go to System
2. Click Storage in the left sidebar
3. Toggle Storage Sense to the On position
4. Click Configure Storage Sense or run it now
5. Set automatic cleanup to run monthly
6. Choose which file types to delete automatically
If you want immediate results, use Disk Cleanup for a one-time deep clean. Search for it in Start, run it on your C: drive, then click "Clean up system files" for a deeper pass that also removes old Windows Update packages — often several gigabytes on their own.
You can also manually clear specific junk categories:
Temporary files — press Win+R, type
%temp%, select all and delete.Browser cache — in Chrome: Settings → Privacy → Clear browsing data → Cached images and files.
Old installation files — check Downloads and the Windows.old folder if present.
Recycle Bin — right-click the desktop icon and empty it.
Duplicate files — scan your Downloads and Pictures folders.
After running Disk Cleanup or Storage Sense, check your available disk space in Settings to confirm it worked. You should notice a meaningful increase in free storage immediately.
Step 3: Manage Startup Programs and Background Apps
Every program set to launch at startup consumes your system's resources before you even open a file. These hidden background processes eat CPU, memory, and disk access — making your PC slow to boot and sluggish during everyday tasks. Taking control of startup apps can dramatically improve both boot time and overall responsiveness.
The easiest way is through Task Manager. This built-in tool shows exactly which applications launch automatically and lets you disable the ones you don't need.
How to disable unnecessary startup programs:
1. Right-click the Taskbar and select Task Manager
2. Click the Startup tab at the top
3. Review the list — pay attention to the Startup impact column
4. Right-click any program you don't need at boot and select Disable
5. Restart your PC to confirm the changes took effect
Be selective about what you disable. Some programs are essential:
Keep enabled — antivirus software, audio/GPU drivers, sync tools you use daily.
Safe to disable — cloud storage apps (OneDrive, Dropbox), messaging apps (Teams, Discord, Slack), game launchers (Steam, Epic), creative suite loaders (Adobe Creative Cloud), manufacturer update utilities.
Disabling just 5–10 unnecessary startup programs can shave 30–60 seconds off your boot time immediately. Monitor your PC for a few days afterwards — if something stops working correctly, you can always re-enable it through Task Manager.
Review your startup list quarterly, since new applications often silently add themselves to startup during installation, gradually slowing your boot time over time.
The easiest way is through Task Manager. This built-in tool shows exactly which applications launch automatically and lets you disable the ones you don't need.
How to disable unnecessary startup programs:
1. Right-click the Taskbar and select Task Manager
2. Click the Startup tab at the top
3. Review the list — pay attention to the Startup impact column
4. Right-click any program you don't need at boot and select Disable
5. Restart your PC to confirm the changes took effect
Be selective about what you disable. Some programs are essential:
Keep enabled — antivirus software, audio/GPU drivers, sync tools you use daily.
Safe to disable — cloud storage apps (OneDrive, Dropbox), messaging apps (Teams, Discord, Slack), game launchers (Steam, Epic), creative suite loaders (Adobe Creative Cloud), manufacturer update utilities.
Disabling just 5–10 unnecessary startup programs can shave 30–60 seconds off your boot time immediately. Monitor your PC for a few days afterwards — if something stops working correctly, you can always re-enable it through Task Manager.
Review your startup list quarterly, since new applications often silently add themselves to startup during installation, gradually slowing your boot time over time.
Step 4: Update Drivers and Secure Your System
Outdated drivers are like old engine oil in your car — they cause friction, reduce performance, and leave your system vulnerable. Keeping drivers current ensures hardware runs smoothly and your PC stays protected against security threats.
Start by checking for driver updates through Windows Update:
1. Open Settings and go to Update & Security
2. Click Check for updates
3. Let Windows scan for driver updates alongside system updates
4. Install any available drivers and restart if prompted
5. Return to Settings to confirm all updates completed successfully
For more control, update drivers through Device Manager for individual components:
- Right-click the Start button and select Device Manager
- Expand any category with a warning icon (yellow triangle)
- Right-click the device and select Update driver
- Choose to search automatically for updated software
- Restart your PC after updates complete
For graphics drivers specifically, go directly to the manufacturer:
NVIDIA — download NVIDIA App from nvidia.com.
AMD — download AMD Software: Adrenalin Edition from amd.com.
Intel (integrated graphics) — use the Intel Driver & Support Assistant.
Beyond performance, updating drivers patches security vulnerabilities that attackers actively exploit. Outdated drivers leave your system exposed to malware and data theft. After updating, always restart your PC completely rather than just logging off — some drivers require a full reboot to activate properly and avoid conflicts.
Start by checking for driver updates through Windows Update:
1. Open Settings and go to Update & Security
2. Click Check for updates
3. Let Windows scan for driver updates alongside system updates
4. Install any available drivers and restart if prompted
5. Return to Settings to confirm all updates completed successfully
For more control, update drivers through Device Manager for individual components:
- Right-click the Start button and select Device Manager
- Expand any category with a warning icon (yellow triangle)
- Right-click the device and select Update driver
- Choose to search automatically for updated software
- Restart your PC after updates complete
For graphics drivers specifically, go directly to the manufacturer:
NVIDIA — download NVIDIA App from nvidia.com.
AMD — download AMD Software: Adrenalin Edition from amd.com.
Intel (integrated graphics) — use the Intel Driver & Support Assistant.
Beyond performance, updating drivers patches security vulnerabilities that attackers actively exploit. Outdated drivers leave your system exposed to malware and data theft. After updating, always restart your PC completely rather than just logging off — some drivers require a full reboot to activate properly and avoid conflicts.
Step 5: Test Your Performance Improvements
You've made real changes to your system. Now it's time to measure the results and confirm your optimisation efforts actually worked. Testing before and after gives you concrete proof that your PC is genuinely faster.
The Windows System Assessment Tool (WinSAT) is your built-in performance measurement tool. It evaluates your processor, memory, graphics, and disk speed.
How to run WinSAT:
1. Press Windows key + R to open the Run dialog
2. Type
3. Type
4. Wait for the assessment to complete (takes 2–5 minutes)
5. Open Settings → System → About and scroll to find your Windows Experience Index score
Beyond scores, pay attention to real-world feel:
Boot time — how long from power-on to a usable desktop?
App launch speed — do programs open noticeably faster?
Multitasking — does switching between apps feel smoother?
File operations — do copies and transfers complete faster?
If boot time improved by 30+ seconds or applications launch significantly faster, the optimisation worked. If you're not seeing expected gains, the startup programs step typically delivers the biggest single improvement — revisit it and disable any remaining high-impact items.
Take a screenshot of your WinSAT score before you start any optimisation session, then compare after each major step. This makes it easy to identify which changes delivered the most performance gain and helps you prioritise future maintenance.
The Windows System Assessment Tool (WinSAT) is your built-in performance measurement tool. It evaluates your processor, memory, graphics, and disk speed.
How to run WinSAT:
1. Press Windows key + R to open the Run dialog
2. Type
cmd and press Enter3. Type
winsat formal and press Enter4. Wait for the assessment to complete (takes 2–5 minutes)
5. Open Settings → System → About and scroll to find your Windows Experience Index score
Beyond scores, pay attention to real-world feel:
Boot time — how long from power-on to a usable desktop?
App launch speed — do programs open noticeably faster?
Multitasking — does switching between apps feel smoother?
File operations — do copies and transfers complete faster?
If boot time improved by 30+ seconds or applications launch significantly faster, the optimisation worked. If you're not seeing expected gains, the startup programs step typically delivers the biggest single improvement — revisit it and disable any remaining high-impact items.
Take a screenshot of your WinSAT score before you start any optimisation session, then compare after each major step. This makes it easy to identify which changes delivered the most performance gain and helps you prioritise future maintenance.
Frequently Asked Questions
How can I check for and install Windows updates to speed up my PC?
Press Windows key + I to open Settings, navigate to Update & Security, and click Check for updates. This ensures your PC has the latest security patches and performance improvements. Enable automatic updates so you never miss a critical fix.
What are the steps to clean up junk files and free up space in Windows 10?
Enable Storage Sense by going to Settings → System → Storage and toggling it on. Set it to run monthly to automatically delete unnecessary temporary files. For an immediate clean, run Disk Cleanup and click "Clean up system files" to also remove old Windows Update packages.
How do I manage startup programs to improve boot time in Windows 10?
Right-click the Taskbar, select Task Manager, then click the Startup tab. Disable any unnecessary applications with a High startup impact. This can reduce your boot time by 30–60 seconds and make your desktop usable much faster after login.
What can I do to ensure my device drivers are up to date?
Go to Settings → Update & Security and click Check for updates. For graphics drivers, download the manufacturer's own software (NVIDIA App or AMD Adrenalin) for the most current version. Check Device Manager for any components showing a yellow warning triangle.
How do I use the Windows System Assessment Tool to measure performance?
Open the Run dialog with Windows key + R, type
Press Windows key + I to open Settings, navigate to Update & Security, and click Check for updates. This ensures your PC has the latest security patches and performance improvements. Enable automatic updates so you never miss a critical fix.
What are the steps to clean up junk files and free up space in Windows 10?
Enable Storage Sense by going to Settings → System → Storage and toggling it on. Set it to run monthly to automatically delete unnecessary temporary files. For an immediate clean, run Disk Cleanup and click "Clean up system files" to also remove old Windows Update packages.
How do I manage startup programs to improve boot time in Windows 10?
Right-click the Taskbar, select Task Manager, then click the Startup tab. Disable any unnecessary applications with a High startup impact. This can reduce your boot time by 30–60 seconds and make your desktop usable much faster after login.
What can I do to ensure my device drivers are up to date?
Go to Settings → Update & Security and click Check for updates. For graphics drivers, download the manufacturer's own software (NVIDIA App or AMD Adrenalin) for the most current version. Check Device Manager for any components showing a yellow warning triangle.
How do I use the Windows System Assessment Tool to measure performance?
Open the Run dialog with Windows key + R, type
cmd, then enter winsat formal. The assessment takes 2–5 minutes and produces a Windows Experience Index score you can compare before and after optimisation to see your concrete performance gains.Do It All Automatically with WhaleClean
WhaleClean handles steps 2–4 automatically — junk file cleaner, startup manager, driver centre, and real-time threat scanner all in one app. Run a full optimisation in under five minutes without touching a single settings menu.
Download WhaleClean Free