Why Is My Windows 11 So Slow? 9 Proven Fixes That Actually Work in 2026

Three months ago, my friend from Pune text me: "My laptop is only 2 years old but Windows 11 runs like it is 10 years old. Apps take 30 seconds to open. Even typing lags. I cannot afford a new laptop right now. Please help."

I remote-accessed his machine (a Lenovo IdeaPad with Ryzen 5 and 8GB RAM) and fixed it in under an hour. His boot time went from 2 minutes 40 seconds to 38 seconds. Chrome stopped freezing. Teams stopped crashing mid-call.

First, Understand Why Windows 11 Gets Slow (The Real Reason)

Most people blame their hardware when their PC slows down. Rarely is that the actual problem.

Windows 11 slows down for three main reasons that compound over time:

Startup bloat: Every app you install tries to run at Windows startup. After 12–18 months of normal use, most Windows 11 PCs have 20–30 apps launching automatically — each consuming RAM and CPU before you even open anything yourself.

The 24H2 update problem: The Windows 11 version 24H2 update (released late 2024) introduced performance issues on several mid-range laptops, particularly those with 8GB RAM. Many Indian users on budget Lenovo, HP, and Acer laptops started experiencing slowdowns after this specific update. Microsoft has issued partial patches, but the problem persists on older hardware.

Background telemetry and services: Windows 11 runs a significant number of background services by default — indexing, telemetry reporting, Cortana-related processes, and Windows Update tasks — that consume CPU silently. These are fixable.

Now let's fix them.

Fix 1: Disable Startup Programs (Biggest Impact, Takes 2 Minutes)

This single fix solved the problem for the reader from Pune.

How to do it:

1. Press Ctrl + Shift + Esc to open Task Manager
2. Click the Startup apps tab (in Windows 11)
3. Look at the "Startup impact" column — sort by "High"
4. Right-click every app marked "High" that you don't need immediately at startup and select Disable

What to safely disable: Spotify, Discord, Teams (unless you need it at login), OneDrive (if you don't use it), Skype, Adobe updaters, Realtek audio manager, Intel graphics command centre, Epic Games Launcher, Steam.

What to keep enabled: Antivirus (Windows Security or third-party), your actual work apps, audio/touchpad drivers if they are not loading automatically elsewhere.

After disabling startup programs, restart your PC and measure the difference. Most users see boot time drop by 40–70%.

Fix 2: Adjust Power Plan to High Performance

Windows 11 defaults to "Balanced" power mode, which deliberately throttles CPU speed to save battery — even on plugged-in desktops and laptops. This is the most common hidden cause of slow performance on Indian office setups where the laptop stays plugged in all day.

How to change it:

1. Click the Search bar and type "Power plan"
2. Select "Choose a power plan"
3. Select High performance (if you don't see it, click "Show additional plans")

On laptops, only use this when plugged in. On battery, switch back to Balanced to preserve charge.

The difference is immediate and noticeable — especially for apps that use the CPU heavily (browsers with many tabs, video editing, coding environments).

Fix 3: Disable Windows Search Indexing (Especially on HDD Systems)

Windows 11 constantly indexes your files in the background so search results appear faster. On Solid State Drives (SSDs), this is harmless. On older Hard Disk Drives (HDDs), which are still very common in Indian budget laptops, this indexing hammers your disk constantly and causes the entire system to slow down.

How to check your drive type:

1. Open Task Manager (Ctrl + Shift + Esc)
2. Click the Performance tab → Disk
3. If it says "HDD" under the graph, your system has a hard drive

How to disable indexing:

1. Press Win + R, type services.msc, press Enter
2. Scroll down to Windows Search
3. Double-click it → change Startup type to Disabled
4. Click Stop, then OK
5. Restart your PC

On HDD-based systems, this fix alone can dramatically improve responsiveness. File search will be slower, but day-to-day performance improves significantly.

Fix 4: Run a Disk Cleanup Including System Files

Windows accumulates gigabytes of temporary files, old Windows Update packages, and system restore points that it never removes automatically.

How to clean them:

1. Press Win + S, search for "Disk Cleanup"
2. Select your C: drive
3. Click Clean up system files (this gives you access to larger files including old Windows Update files)
4. Check all boxes, paying special attention to: Windows Update Cleanup, Temporary Internet Files, Recycle Bin, Thumbnails
5. Click OK → Delete Files

On a typical 2-year-old system, this clears between 3GB and 15GB. One user I helped had 22GB of stale Windows Update files alone.

Fix 5: Adjust Visual Effects for Performance

Windows 11 is visually polished — transparencies, animations, shadow effects, rounded corners. All of these look good but consume RAM and GPU power on systems with 4GB or 8GB of RAM.

How to reduce them:

1. Press Win + R, type sysdm.cpl, press Enter
2. Click the Advanced tab → under Performance, click Settings
3. Select "Adjust for best performance" (this disables all visual effects)
4. Or, for a middle ground, select "Custom" and keep only:
   • Show thumbnails instead of icons
   • Smooth edges of screen fonts

On 8GB RAM systems with integrated graphics (common on Indian budget laptops with Ryzen 5 or Intel Core i5), this fix frees up 200–400MB of RAM that was being used purely for visual polish — RAM that can now go to your actual work.

Fix 6: Identify and Kill RAM-Eating Processes

Sometimes one rogue process eats all your memory. This is easy to find and fix.

How to find it:

1. Open Task Manager (Ctrl + Shift + Esc)
2. Click the Processes tab
3. Click the Memory column header to sort by highest RAM usage

Common culprits and what to do:

• MsMpEng.exe (Windows Defender): Eating high CPU usually means a scan is running. It normalises after the scan finishes. If it's always high, go to Windows Security → Virus & threat protection → Manage settings and add your project folders to "Exclusions" so Defender stops scanning them repeatedly.

• SearchIndexer.exe: This is Windows Search indexing. Fix it using Fix 3 above.

• svchost.exe using high RAM: This is a container for Windows services. Right-click it → "Go to service(s)" to see exactly which service inside is the culprit.

• Browser tabs: Chrome is notorious for RAM usage. Each tab consumes 100–400MB. Use Chrome's built-in Memory Saver (Settings → Performance → Memory Saver) or switch to Microsoft Edge which uses significantly less RAM.

Fix 7: Check for Malware (It Is Often the Hidden Cause)

In India, malware is a common and underestimated cause of slow PCs. Downloaded software from unofficial sources, cracked apps, pirated software installers — all common in the Indian market — frequently bundle malware that runs quietly in the background, consuming CPU and sending data externally.

Free tools to check:

• Malwarebytes Free (malwarebytes.com) — Run a full scan. It finds things Windows Defender misses, particularly adware and potentially unwanted programs (PUPs).
• Windows Security → Virus & threat protection → Full scan

If Malwarebytes finds anything, remove it and restart. Many users who think their laptop is "dying" find it runs perfectly fine after malware removal.

Fix 8: Update or Roll Back Problematic Drivers

Outdated or buggy drivers — especially for graphics cards (Intel Iris, AMD Radeon) and Wi-Fi adapters — cause system slowdowns and freezes that look like overall performance problems.

How to check:

1. Right-click the Start button → Device Manager
2. Look for any yellow warning triangles (!) next to devices
3. Right-click flagged devices → Update driver → Search automatically for drivers

For graphics drivers specifically, visit the manufacturer's website directly:

• Intel: intel.com/content/www/us/en/download-center
• AMD: amd.com/en/support
• NVIDIA: nvidia.com/Download/index.aspx

If you recently updated a driver and the slowdown started after that, you can roll it back: Device Manager → right-click the device → Properties → Driver tab → Roll Back Driver.

Fix 9: Upgrade RAM or Switch to SSD (Last Resort, High Impact)

If all software fixes don't solve the problem, your hardware is genuinely the bottleneck.

RAM: Windows 11 runs reasonably on 8GB but is noticeably smoother on 16GB — especially if you use Chrome with many tabs, Microsoft Teams, or any creative software. Adding 8GB of DDR4 RAM costs approximately ₹1,500–₹2,500 in India (Flipkart/Amazon) and the installation takes 15 minutes on most laptops. This is the single highest-impact hardware upgrade you can make.

SSD: If your laptop has an HDD (spinning disk), replacing it with a 256GB or 512GB SSD transforms the experience. Boot times drop from 2–3 minutes to 15–20 seconds. Apps open almost instantly. A 512GB SATA SSD costs approximately ₹3,000–₹4,500 in India. This is worth doing for any laptop you plan to use for 2+ more years.

Check your laptop's service manual (available free on the manufacturer's website) to confirm RAM and storage upgrade compatibility before purchasing.

Quick Reference: Which Fix to Try First?

Frequently Asked Questions

Will these fixes work on Windows 11 Home (which comes with most Indian laptops)? Yes. All fixes above work on Windows 11 Home, Pro, and SE editions.

Is it safe to disable startup programs? Yes. Disabling a startup program doesn't uninstall it. You can re-enable it anytime through Task Manager. It simply stops the app from launching automatically at boot.

My PC is slow only when on Wi-Fi — is that related? That's a network/driver issue, not a performance issue. Update your Wi-Fi adapter driver using Fix 8 and check if your router is congested.

Should I use a third-party PC cleaner app like CCleaner? The built-in Windows tools (Disk Cleanup, Task Manager) are sufficient and safer. Many "PC cleaner" apps are themselves the cause of performance problems — they run background processes and some are adware. Stick to the built-in tools and Malwarebytes.

Final Word

Windows 11 slowdowns are almost always fixable without spending money. Start with Fix 1 (startup programs) and Fix 2 (power plan) — those two alone resolve the problem for about half of users. Work through the remaining fixes if you still see issues.

If your laptop is under 5 years old and was reasonably fast when new, there is no reason it cannot run well again. The fixes above are what I apply every time a reader sends me a slow PC problem — and they work.

Have a question about your specific laptop model? Drop it in the comments below.