The laptop is incredibly slow: what can I do to get the speed back?

Has your laptop become slower than a turtle on tranquilizers? Applications take forever to open, video slows down, and the cursor freezes in place, as if pondering the meaning of life? The problem of a “slow” laptop is familiar to every second user - and it is not always associated with outdated hardware. Most often to blame software glitches, overheating or incorrect settings, which you can fix yourself in 10–30 minutes.

In this article we will analyze all possible reasons brakes - from banal system clogging with garbage to hidden viruses and hardware malfunctions. You will learn how determine the bottleneck of your laptop in 2 clicks, what tools to use for diagnostics, and what to do if even reinstalling Windows did not help. And also why sometimes cheap SSD saves worse than cleaning from dust, and how to prevent repeated lags in the future.

1. Diagnostics: why is the laptop slow?

Before treatment, a diagnosis must be made. Brakes may be caused by one reason or a whole bunch of problems. Let's start with the simplest thing - checking the system load.

Open Task Manager (keyboard shortcut Ctrl + Shift + Esc for Windows or Command + Option + Esc for macOS). Go to the tab Performance and see which component is loaded at 100%:

• 🔥 Central Processing Unit (CPU) - if the download is constantly at maximum, background processes or viruses are to blame.
• 🖥️ Random access memory (RAM) — if 90%+ is occupied during simple tasks, there is a critical lack of memory.
• 💾 Disk (HDD/SSD) - constant loading at 100% indicates problems with the drive or drivers.
• 🔋 GPU (video card) — if it slows down when watching videos or playing games, it may be overheating or outdated drivers.

If in Task Manager there is no obvious “culprit”, but the laptop still slows down, the reasons may be deeper: from bad sectors on the hard drive to incorrect BIOS settings. Let's move on to a detailed check.

2. System cleaning: remove junk and unnecessary programs

The most common cause of brakes is clogged system. Over the years of use, gigabytes of temporary files, caches, remnants of deleted programs and duplicates accumulate on a laptop. Even if you have SSD, this can slow things down significantly.

Let's start with cleaning temporary files:

• 🧹B Windows: press Win + R, enter %temp% and delete everything from the folder. Then repeat with temp (without %).
• 🧹B macOS: open Finder → Go → Go to Folder and enter /Library/Caches And ~/Library/Caches.
• 🗑️ Use the built-in utility Disk Cleanup (Windows) or Optimized Storage (macOS).

Next - removing unnecessary programs. Many people install software “for the future,” which hangs in the background and eats up resources. Check the list of installed programs (Control Panel → Programs and Features in Windows or Finder → Programs in macOS) and delete everything you don't use.

⚠️ Attention: Do not delete files from folders System32, WinSxS or /System/Library - this can break the system! If you are not sure that the file can be deleted, skip it.

3. Startup: why does the laptop slow down when turned on?

If laptop takes a long time to load or “freezes” immediately after turning on, the problem is most likely in startup. Many programs (especially instant messengers, antiviruses and cloud services) are added to autorun and begin to consume resources even before you have time to open the browser.

How to check and disable unnecessary things:

• 🖥️ B Windows: open Task Manager → Startup. Sort by Column Impact on launch and disable everything except antivirus and drivers.
• 🍎 B macOS: go to System Preferences → Users and Groups → Login Items.
• 📱 B Linux (Ubuntu/Debian): use the command

  sudo systemctl list-unit-files --state=enabled

  and disable unnecessary services with the command sudo systemctl disable service_name.

Pay special attention browser extensions — they often hang in the background and slow down the system. B Chrome check chrome://extensions, in Firefox — about:addons.

Program	Impact on launch	Can I turn it off?
Antivirus (Kaspersky, ESET)	High	No (security risk)
Steam, Epic Games	Average	Yes (start manually)
OneDrive, Google Drive	Low/Medium	Yes (if auto-sync is not needed)
NVIDIA/AMD Control Panel	Low	No (needed for drivers)
Telegram, Discord	Low	Yes (run if necessary)

4. Viruses and malware: hidden “brakes”

Even if you have an antivirus installed, this does not guarantee protection against miners, spyware or ad viruses, which can load the processor or network in the background. Signs of infection:

• 🔍 The laptop slows down for no apparent reason (especially when simply surfing the Internet).
• 📈 B Task Manager There are unknown processes with a high load on the CPU/GPU.
• 🌐 Internet traffic is growing without your participation (check in Settings → Network).
• 🔊 Random ad windows or redirects appear in the browser.

How to check and clean the system:

1. Antivirus scanning: Use Kaspersky Virus Removal Tool (free utility) or Malwarebytes for deep checking.
2. Browser check: Remove all extensions that you did not install yourself. B Chrome also check chrome://settings/cleanup.
3. Network activity analysis: B Windows open Resource Monitor (Win + R → resmon) and see what programs are using the network.
4. Checking the task scheduler: B Start → Control Panel → Administrative Tools → Task Scheduler remove suspicious tasks.

⚠️ Attention: Some viruses disguise themselves as system processes (for example, svchost.exe or lsass.exe). If you are not sure that the process is malicious, check it through VirusTotal or Process Explorer from Microsoft.

5. Hardware problems: overheating, dust and wear

If software methods do not help, the problem may be "hardware". The most common hardware causes of brakes:

• 🔥 Overheating: Dust in the cooler or dried out thermal paste leads to throttling (automatic decrease in performance).
• 💾 HDD/SSD wear and tear: Hard drives wear out over time, and SSDs lose speed after the recording resource is exhausted.
• 🔋 Faulty RAM: Broken RAM sticks cause freezes and blue screens.
• 🔌 Weak power supply: If the laptop slows down only on the battery, it may be worn out or the power supply does not provide the required voltage.

How to check:

• Temperature: Use HWMonitor (Windows) or iStat Menus (macOS). Normal for CPU: up to 70°C under load, up to 50°C at idle. If higher, cleaning is needed.
• Disk Status: B Windows run wmic diskdrive get status in CMD. If the status is not OK, it's time to change the disk. For a detailed check, use CrystalDiskInfo.
• RAM: Run the test in MemTest86 (runs from a flash drive). If there are errors, the bar needs to be replaced.

How to clean your laptop from dust yourself

1. Turn off the laptop and disconnect the battery (if removable).

2. Unscrew the bottom cover (you need a Phillips screwdriver).

3. Carefully blow off dust from the cooler and radiator with a can of compressed air (do not use a vacuum cleaner!).

4. Check the thermal paste on the processor - if it is dry, replace it with new one (for example, Arctic MX-4).

5. Reassemble the laptop and check the temperature under load.

⚠️ If you are not confident in your abilities, it is better to take it to a service center - the risk of damaging the cables or the board is high!

If your laptop is over 5 years old and slows down even after cleaning, it may be time to think about upgrade. The most effective improvements:

• 💾 Replacement HDD on SSD (even budget Kingston A400 will speed up loading by 5-10 times).
• 🖥️ Add RAM (optimally 16 GB for modern tasks).
• 🔧 Replacing thermal paste and cleaning the cooling system.

6. Optimizing Windows/macOS/Linux: hidden settings

Even on a “clean” system, you can squeeze out additional performance if you configure the OS correctly. Let's look at optimization for different systems.

🖥️ Windows 10/11

• 🛠️ Turn off visual effects: Control Panel → System → Advanced system settings → Performance → Settings → Get better performance.
• 🔄 Disable indexing: If you have SSD, indexing only slows down the system. Open Services (services.msc) and stop Windows Search.
• 📁 Disable Account Control (UAC): Control Panel → User Accounts → Changing Accounting Control Settings — move the slider down.
• 🔗 Set up a swap file: If you have 16+ GB RAM, disable it completely. If less, set a fixed size (1.5 of the amount of RAM).

🍎 macOS

• 🎨 Disable animation: In the terminal, enter:

  defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool false

• 🗑️ Clear the Spotlight cache:

  sudo mdutil -a -i off

  (turn back on: sudo mdutil -a -i on)

• 🔄 Reset SMC and NVRAM: This helps with strange lags. Instructions for your model are on the Apple website.

🐧 Linux (Ubuntu/Debian)

• 📦 Use a lightweight graphical shell: Replace GNOME on XFCE or LXQt:

  sudo apt install xubuntu-desktop

• 🔧 Disable unnecessary services:

  sudo systemctl --type=service --state=running

  (disable unnecessary ones with the command sudo systemctl disable service_name)

• 🐧 Use zram instead of swap: Speeds up work on weak PCs:

  sudo apt install zram-config

💡

Setting up a page file in Windows is one of the most effective ways to speed up work on low-power laptops with 4–8 GB of RAM. A fixed size (e.g. 8GB) is faster than automatic.

7. If all else fails: radical measures

Have you tried everything, but your laptop is still slow? Perhaps the problem is deeper than it seems. Let's consider extreme measures:

• 🔄 Reset the system to factory settings: B Windows this is done through Settings → Update & Security → Recovery. On macOS - reinstallation via Recovery Mode (Command + R when loading).
• 🖥️ Reinstalling the OS to the light version:
  • For Windows: Install Windows 10 LTSC (without unnecessary software) or Tiny11 (lightweight “eleven”).
  • For Linux: Try it AntiX or Puppy Linux - they even work on PCs from 2005.
• 🔧 Replacing thermal paste and cleaning: If the laptop overheats, even cleaning may not help - the thermal paste dries out over time. Service replacement cost: RUB 1,000–2,000.
• 💾 Replacing HDD with SSD: If you still have hard drive, replacement by SSD (even budget Crucial BX500) will increase speed by 5–10 times.
• 🔋 Replacing the battery: A worn-out battery can cause voltage sags and brakes. Check its condition at HWInfo (tab Battery).

⚠️ Attention: If the laptop slows down even after reinstalling the OS and replacing the SSD, the problem may be motherboard (for example, swollen capacitors) or processor (degradation due to overheating). In this case, repairs may cost more than the laptop itself - it makes sense to think about buying a new one.

FAQ: Frequently asked questions about laptop brakes

🔍 Why does my laptop slow down after updating Windows?

Most often the culprits are:

1. Drivers: The update may have reset them or installed incompatible versions. Check in Device Manager (yellow exclamation marks).
2. Background processes: Windows 11 actively uses Microsoft Defender And Telemetry. Disable them via Services (services.msc).
3. Broken files: Run in CMD from admin:

   sfc /scannow
   dism /online /cleanup-image /restorehealth

If that doesn't help, roll back to the previous version via Settings → Update & Security → Recovery.

🎮 Why do games slow down, but the system as a whole works fine?

The reasons may be different:

• Throttling: Check the GPU/CPU temperature in MSI Afterburner. If it is above 90°C, it needs cleaning.
• Drivers: Delete the current ones via Display Driver Uninstaller (DDU) and install the latest ones from the site NVIDIA/AMD/Intel.
• Graphics Settings: Disable in games V-Sync, reduce Shadows And Particle effects.
• Background processes: Close Discord, Chrome and other programs that can use the GPU (check in Task Manager → GPU).

If your laptop is old, try running the game via GeForce NOW or Xbox Cloud Gaming — cloud gaming will take the load off your hardware.

💻 Is it possible to speed up a laptop without replacing components?

Yes, but the effect depends on the initial state:

• On weak laptops (2–4 GB RAM, HDD): Cleaning the system, disabling startup and switching to Linux (For example, Lubuntu) can give an increase of up to 30–50%.
• On medium (8 GB RAM, SSD): Optimizing Windows, disabling visual effects and updating drivers will speed up your work by 10-20%.
• On powerful ones (16+ GB RAM, SSD, discrete video card): The effect will be minimal - here the brakes are usually associated with overheating or viruses.

If the laptop is more than 7–8 years old, even software optimization will not replace an upgrade SSD or RAM.

🔋 Why does my laptop slow down when running on battery power?

This is normal behavior for most laptops, but it can be adjusted:

1. Power supply diagram: B Windows select High performance in Control Panel → Power Options.
2. CPU limit: B Device Manager → Processors check if the checkbox is unchecked Power management (remove it).
3. Battery wear: If the capacity drops below 50% of the original (check in HWInfo), the battery does not produce the required voltage - replace it.
4. BIOS Settings: In some laptops (for example, Lenovo or HP) there is an option Battery Life Cycle - put Maximum Performance.

If the brakes are critical, try running on mains power only or buy a new battery.

🛠️ Is it worth taking your laptop to a service center if it slows down?

Yes, if:

• You have already tried all software methods (cleaning, reinstalling the OS, replacing thermal paste).
• Laptop overheats (turns off due to high temperature).
• There are suspicions about hardware faults (artifacts on the screen, strange sounds from the speakers, some keys do not work).
• You are not confident in your skills (for example, you are afraid of damaging the cables when cleaning).

Average cost of diagnostics in the service: 500–1,500 rubles. Repair (cleaning + replacement of thermal paste) will cost 1,500–3,000 rubles.

If the laptop is older than 5 years and repairs cost more than 30% of its price, it makes sense to think about buying a new one.