The laptop is slow: what to do if the system is slow

Has your laptop started to boot slower, programs take forever to open, and you can forget about multitasking? This problem is familiar to every second user, especially after 2-3 years of operation. The reasons for the brakes may lie in contaminated software, and in hardware limitations - from overheating to outdated hardware.

In this article we will look at all possible reasons for the slowdown - from trivial (full disk) to hidden (viruses in startup) - and we’ll give Specific speedup instructions for Windows 10/11, macOS and Linux. You will learn how to diagnose the problem, which settings to optimize, and in which cases you cannot do without an upgrade. Let's start with the simplest thing - checking the system for basic errors.

1. Diagnostics: why the laptop began to slow down

Before you start optimizing, you need to identify the root of the problem. Brakes can manifest themselves in different ways:

• 🐢 Long system boot time (more than 1-2 minutes) - the hard drive is often to blame (HDD) or overloaded startup.
• 🖥️ Lags during operation (freezes, slowdowns) - a sign of insufficient RAM (RAM) or overheating.
• 🔄 Slow opening of programs/files — problems with the disk or fragmentation are possible (relevant for HDD).
• 🎮 Low FPS in games - signal about a weak video card or overheating GPU.

For accurate diagnostics, use the built-in tools:

• 🔍 Windows: Task Manager (Ctrl+Shift+Esc) → tab Performance. Check your download CPU, RAM, disk And networks.
• 🍎 macOS: System monitoring (Applications → Utilities). Pay attention to processes consuming >50% of resources.
• 🐧 Linux: Team top or htop in the terminal.

If you see in the task manager that disk is 100% loaded even without active programs, this is a critical signal. Most often the problem is:

• 🦠 Viruses or miners (check processes with strange names, for example svchost.exe *32 with high load).
• 🔄 Background defragmentation (relevant for HDD).
• 📁 Damaged system files (need sfc /scannow on the command line as admin).

2. System cleaning: remove junk and unnecessary programs

The most common cause of brakes is contaminated system. Over the years of use, gigabytes of temporary files, cache, outdated programs and duplicates accumulate. Let's start with general cleaning.

Step 1: Remove unnecessary programs

• 🗑️ Windows: Settings → Applications → Apps & features. Sort by installation date and remove what you don't use. Particular attention to programs with names like Driver Booster, PC Cleaner (often this potentially unwanted software).
• 🍎 macOS: Drag unnecessary programs from the folder Programs to cart. Don't forget about residual files in ~/Library/Application Support.

Step 2: Clear temporary files

• 🧹 Windows: Use the built-in utility Disk Cleanup (enter in search). Select drive C: and check all the boxes, including Temporary Internet files And Cart.
• 🧹 macOS/Linux: In the terminal run:

  rm -rf ~/Library/Caches/*  # macOS
  rm -rf ~/.cache/*            # Linux

Step 3: Clear browser cache

Browsers (Chrome, Firefox, Edge) can take up tens of gigabytes of cache. For example, in Chrome:

1. Open chrome://settings/clearBrowserData.
2. Select All the time and mark Images and other files stored in the cache.
3. Click Delete data.

⚠️ Attention: Do not delete files from folders System32 (Windows) or /System (macOS) manually! This may lead to system inoperability. For deep cleaning, use proven utilities like CCleaner (only from the official website!) or BleachBit (Linux).

3. Optimization of startup and background processes

One of the main reasons why Windows boots slowly is overloaded startup. Many programs (for example, Skype, Discord, Steam) are added there without your knowledge and slow down the system every time you turn it on.

How to disable autostart in Windows 10/11:

1. Open Task Manager (Ctrl+Shift+Esc).
2. Go to the tab Autoload.
3. Sort programs by column Impact on launch.
4. Disable everything except antivirus and critical drivers (for example, NVIDIA GeForce Experience can be disabled).

On macOS autoloading is controlled via:

• 📁 System Preferences → Users and Groups → Login Items.
• 🖥️ Folders:

  /Library/LaunchAgents/      # Для всех пользователей
  ~/Library/LaunchAgents/     # Для текущего пользователя

Background processes They also steal resources. On Windows, check:

• 🔄 Settings → Privacy → Background apps - disable unnecessary ones.
• 📡 Settings → Networks and Internet → Data usage - some programs (for example, OneDrive) are synchronized in the background.

4. Check for viruses and mining software

Viruses and hidden miners (cryptocurrency mining programs) can load the processor up to 100% without your knowledge. Symptoms of infection:

• 🔥 The laptop gets very hot and makes noise even when idle.
• 📉 Productivity drops “out of the blue.”
• 🔌 The battery runs out quickly (miners consume a lot of energy).

How to check the system:

1. Windows Defender (built-in on Windows):

   Пуск → Параметры → Обновление и безопасность → Безопасность Windows → Защита от вирусов и угроз → Быстрая проверка

2. Kaspersky Virus Removal Tool (free utility for one-time check).
3. Malwarebytes (specializes in spyware and mining software).

For macOS will do Avast Security or Bitdefender Virus Scanner. On Linux viruses are less common, but can be scanned ClamAV:

sudo apt install clamav  # Установка
sudo freshclam           # Обновление баз
clamscan -r --bell -i ~/ # Сканирование домашней папки

If the antivirus finds threats like Trojan.Miner or PUP.Optional.Segurazo — remove them and reboot your laptop. After cleaning, check the processes in the task manager: miners are often disguised as system services (for example, svchost.exe high consumption CPU).

⚠️ Attention: Some "optimizers" (for example, Advanced SystemCare) install unnecessary programs themselves. Use only proven utilities from official websites. If after removing the virus the brakes remain, check hosts-file for suspicious entries (path: C:\Windows\System32\drivers\etc\hosts).

5. Optimizing your hard drive and switching to SSD

If your laptop is equipped HDD (not SSD), this is one of the main reasons for brakes. Even new HDD works 5-10 times slower SSD. Check the disk type:

• 🖥️ Windows: Task Manager → Performance → Disk. If the "Type" section indicates HDD - that's your problem.
• 🍎 macOS: About This Mac → System Report → Hardware → SATA/SATA Express.

How to speed up HDD (if SSD is not an option):

• 🔄 Defragmentation (only for HDD!):

  Пуск → Средство дефрагментации и оптимизации дисков → Оптимизировать

  Note: In Windows 10/11, defragmentation runs automatically according to a schedule, but if fragmentation is severe, you should run it manually.
• 🗃️ Cleaning up unnecessary files (see section 2).
• 📁 Transferring files to an external drive (free up at least 15-20% of the space on the system drive).

Switching to SSD - the most effective upgrade for an old laptop. Even budget SSD (For example, Kingston A400 or Crucial BX500) will speed up system loading by 3-5 times. What to do:

1. Check compatibility: Suitable for most laptops 2.5" SATA SSD (For example, Samsung 870 EVO). For modern models - M.2 NVMe (For example, WD Black SN770).
2. Clone the system with HDD on SSD with the help Macrium Reflect (Windows) or Carbon Copy Cloner (macOS).
3. Replace the drive (this takes 10-15 minutes on most laptops).

Disk type	Reading speed	Write speed	Average price for 500 GB
HDD (7200 rpm)	80-160 MB/s	80-160 MB/s	2 000 — 3 000 ₽
SSD SATA	500-550 MB/s	450-520 MB/s	3 500 — 5 000 ₽
NVMe PCIe 3.0	2,500-3,500 MB/s	1,500-3,000 MB/s	5 000 — 8 000 ₽
NVMe PCIe 4.0	5,000-7,000 MB/s	4,000-6,000 MB/s	8 000 — 15 000 ₽

6. Increase random access memory (RAM)

If the laptop slows down when opening several browser tabs or light programs (for example, Word + Excel), the problem is lack of RAM. Check its download:

• 🖥️ Windows: Task Manager → Memory. If >80% occupied during normal work, it’s time to add RAM.
• 🍎 macOS: System Monitoring → Memory. Please note Swap used (if the value is high, there is not enough memory).

How much memory is needed in 2026:

• 📝 Office work (browser, Office): minimum 8 GB.
• 🎮 Games (GTA V, Cyberpunk 2077): 16 GB and more.
• 🎬 Video editing (Premiere Pro, DaVinci Resolve): 32 GB.

How to increase RAM:

1. Check the maximum supported volume:
   • 🖥️ Windows: msinfo32 → find the line Installed physical memory (RAM).
   • 🍎 macOS: About This Mac → System Report → Memory.

Buy compatible strips. Suitable for most laptops DDR4 SO-DIMM (For example, Crucial 16GB 3200MHz).

Install the memory (this takes 5-10 minutes on most laptops).

If the laptop does not support memory upgrades (as most MacBook or ultrabooks), consider swap file (virtual memory on disk). On Windows:

1. Open Settings → System → About → Advanced system settings.
2. In the section Performance click Options → Advanced → Edit in section Virtual memory.
3. Uncheck Automatically select the size of the paging file and install Specify size: Initial – 1.5 × RAM, Maximum - 3 × RAM.

⚠️ Attention: Do not mix memory sticks from different manufacturers or with different frequencies! This may lead to unstable work or decreased performance. If the laptop supports dual-channel mode, install the sticks in pairs (for example, 2 × 8 GB instead of 1 × 16 GB).

7. Overheating: cleaning and replacing thermal paste

Overheating is one of the most insidious causes of brakes. At temperatures above 80-90°C processor starts throttling (automatic frequency reduction), which leads to a sharp drop in performance. Symptoms:

• 🔥 The laptop gets very hot and turns off spontaneously.
• 💨 The cooler operates at maximum speed even when idle.
• 📉 Productivity drops after 10-15 minutes of work.

How to check the temperature:

• 🌡️ Windows: HWMonitor, Core Temp, AIDA64.
• 🌡️ macOS: iStat Menus or Macs Fan Control.
• 🌡️ Linux: Team sensors (install package lm-sensors).

Normal temperatures:

• 🖥️ Simple: 30-50°C.
• 🎮 Load (games, rendering): 70-85°C (maximum 90°C).
• ❄️ If the temperature is higher 90°C — Urgently needs cleaning!

How to clean your laptop:

1. Turn off the laptop and disconnect the battery (if it is removable).
2. Remove the bottom cover (you need a Phillips screwdriver).
3. Blow out the radiator and cooler with compressed air (a can for cleaning equipment).
4. Remove dust from the cooler blades with a cotton swab dipped in alcohol.
5. If the thermal paste has dried out (turned black, become hard), replace it with a new one (Arctic MX-6, Noctua NT-H2).

What happens if you don't clean your laptop?

With constant overheating (>90°C), the service life of the processor and video card is reduced by 2-3 times. The thermal paste may also melt, which will lead to peeling of the radiator and even greater overheating.

If the temperature remains high after cleaning:

• 🔄 Check the operation of the cooler - it may not be spinning due to a malfunction.
• 📉 Reset settings BIOS (sometimes after the update the cooling parameters are lost).
• 🛡️ Use a cooling pad (eg. Cooler Master NotePal X3).

8. System reinstallation and alternative OS

If all the previous methods did not help, the problem may be damaged system files or accumulated errors. In this case it will help:

• 🔄 System Restore (rollback to the previous point).
• 📥 Clean installation of Windows/macOS/Linux.
• 🐧 Switching to a lightweight OS (For example, Linux Mint for old laptops).

How to reinstall Windows 10/11:

1. Download Media Creation Tool from the Microsoft website and create a bootable USB flash drive.
2. Boot from the flash drive (in BIOS set download priority).
3. Select Custom installation and format the system disk.
4. Install the system and drivers (download from the laptop manufacturer’s website).

Lightweight alternatives to Windows:

• 🐧 Linux Mint Xfce - optimized for weak PCs (requires 1 GB RAM And 15 GB of space).
• 🍎 ChromeOS Flex - cloud OS from Google, runs on laptops 10 years old.
• 🖥️ Windows 10 LTSC — a lightweight version of Windows without unnecessary services (suitable for office work).

If you decide to switch to Linux, consider:

• ✅ Pros: free, low hardware requirements, no viruses.
• ❌ Disadvantages: not all programs have versions for Linux (for example, Adobe Photoshop, AutoCAD).

FAQ: Frequently asked questions about laptop brakes

🔹 The laptop slows down after updating Windows. What to do?

Windows updates sometimes contain bugs that cause slowdowns. Try:

1. Roll back update: Settings → Update & Security → Windows Update → View update history → Uninstall updates.
2. Disable automatic updates (temporarily): Services → Windows Update → Startup type: Manual.
3. If the problem persists, check the drivers (especially video cards) and install them manually from the manufacturer’s website.

🔹 Is it possible to speed up a laptop without replacing hardware?

Yes, in most cases. Start with:

• Cleaning the system of debris and viruses.
• Autoload optimizations.
• Adding RAM (if there is a free slot).
• Cleaning from dust and replacing thermal paste.

If the laptop is more than 5 years old and is equipped HDD, replacement by SSD will give an increase in performance without completely replacing the hardware.

🔹 Why does my laptop slow down when connected to the Internet?

Possible reasons:

• 📡 Background download of updates (Windows, drivers, games via Steam).
• 🦠 Hidden mining (check processes in task manager).
• 📤 Cloud storage synchronization (OneDrive, Google Drive).
• 🛡️ Antivirus scans traffic (disable HTTPS check feature in settings).

Solution: open Task Manager → Networks and see which application is consuming traffic. Disable it or limit background activity.

🔹 How to speed up a laptop for gaming?

For gaming laptops the following are critical:

1. Temperature: Use a cooling pad and keep it clean.
2. Video card drivers: Always install the latest versions from the site NVIDIA/AMD.
3. Graphics Settings: reduce in games Shadows, Particle effects And Render resolution (for example, with 1080p to 900p).
4. Background processes: Close all unnecessary programs (especially a browser with many tabs).

If FPS is still low, try:

• Install Radeon Software Adrenalin (for AMD) or NVIDIA GeForce Experience and optimize settings automatically.
• Use DLSS (for video cards NVIDIA RTX) or FSR (for AMD) - this increases FPS without losing quality.

🔹 Should you use “optimizers” like CCleaner?

Most "optimizers" (eg. CCleaner, Advanced SystemCare,