Have you pressed the power button, but the screen lights up after a minute? Programs open in slow motion, and the cursor freezes in place when you try to switch tabs? Such symptoms are familiar to every second laptop user - regardless of the model (ASUS ROG, Lenovo ThinkPad, MacBook Pro) or operating system. In 80% of cases, the problem is solved without contacting a service center, but to do this you need to accurately determine its source.

In this article we will look at all possible causes of brakes - from processor overheating to hidden viruses that steal system resources. You will learn how to check CPU, RAM and disk load without third-party programs, what Windows/macOS settings eliminate lags, and when it’s really time to take the laptop in for repair. And for the most impatient - quick solution at the end of the article.

1. Overheating: why the laptop “thinks” under load

If the laptop starts to slow down 10-30 minutes after turning it on, and the case becomes hot, it’s to blame overheating. Modern processors (Intel Core i7/i9, AMD Ryzen 7/9) automatically reduce performance at critical temperatures (usually above 90–95°C) to avoid damage. It's called throttling (throttling).

How to check the temperature:

  • 🔥 Windows: download HWMonitor or Core Temp - they will show the temperature of the processor cores, video card and hard drive in real time.
  • ❄️ macOS: use the utility iStat Menus or command in Terminal: 
    sudo powermetrics --samplers smc | grep -i "CPU die temperature"
  • 📊 Normal values: to 70–80°C under load (games, rendering), up to 50–60°C in idle time.

Causes of overheating and solutions:

Problem How to check Solution
Dusty cooling system Remove the bottom cover and inspect the radiator Clean the dust with compressed air or contact service
Dried thermal paste The temperature fluctuates even when idle Replace thermal paste (eg Arctic MX-6)
Faulty cooler The fan does not rotate or is noisy Replace the cooler or lubricate the bearing
Blocking the air ducts The laptop is placed on a soft surface (bed, sofa) Use a hard stand or cooling pad
⚠️ Attention: If the processor temperature exceeds 100°C, turn off your laptop immediately! Further work may lead to irreversible damage to the chip (for example, crystal delamination on Intel 12th–13th generation).
📊 How often do you clean your laptop cooling system?
  • Once every 3–6 months
  • Once a year
  • Only when it starts to warm up
  • Never

2. Lack of random access memory (RAM): symptoms and solutions

If the laptop “thinks” when opening several browser tabs or simple programs (Word, Excel), the problem is most likely in lack of RAM. Modern applications consume huge amounts of memory:

  • 🌐 One tab Google Chrome with a social network - 500 MB–1 GB RAM.
  • 🎮 Photoshop or AutoCAD - from 2 GB (excluding project files).
  • 🎵 Spotify + Telegram + Discord - up to 1.5 GB in the background.

How to check memory usage:

  1. Windows: open Task Manager (Ctrl+Shift+Esc) → tab Performance → Memory.
  2. macOS: System monitoring (Programs → Utilities) → tab Memory.

If there is less free memory 10–15% from the total volume, the system begins to use swap file (on the hard drive), which is in 10–100 times slower than RAM. Solutions:

  • 🔄 Close unnecessary programs: even minimized applications can take up memory.
  • 🔧 Disable autoloading: in Task Manager (Windows) or User settings (macOS) disable unnecessary programs.
  • 💾 Add RAM: if the laptop has a free slot, install an additional bracket (for example, 8 GB DDR4 for office tasks or 16–32 GB for games/montage).
  • 🖥️ Use lightweight alternatives:
    List of lightweight programs

    • Browser: Firefox or Edge instead of Chrome.
    • Office: LibreOffice instead of Microsoft Office.
    • Graphics: GIMP or Paint.NET instead of Photoshop.

💡

On laptops with 4 GB RAM (For example, Lenovo IdeaPad 3 or Acer Aspire 5) even Windows 11 will slow down. Consider upgrading or switching to Linux (distribution Xubuntu consumes everything 1–1.5 GB RAM).

3. Slow hard drive (HDD) vs. SSD: what's the difference

If laptop takes a long time to turn on (more than 1–2 minutes), programs open in 10–30 seconds, and files are copied at speed 30–50 MB/s - guilty hard disk (HDD). Even a new HDD works in 5–10 times slower than SSD:

Operation HDD (for example, Seagate Barracuda) SSD (eg Samsung 980 Pro)
Download Windows 10 40–60 seconds 10–15 seconds
Opening Photoshop 20–30 seconds 2–5 seconds
Copying a 10 GB file 3–5 minutes 20–40 seconds

How to check disk type:

  • 🖥️ Windows: open Disk management (Win+X → Disk management) or use the command: 
    wmic diskdrive get model

    If the title contains SSD (For example, Kingston SA400S37) - you have a solid state drive.

  • 🍎 macOS: About this Mac → Storage. The SSD will be designated as Flash storage.

Solutions:

  1. Replace HDD with SSD: even budget Crucial BX500 (500 GB) will speed up the laptop in 3–5 times. For games and video editing, take NVMe (For example, WD Black SN770).
  2. Optimize your current HDD:

    Disable file indexing|Defragment (dfrgui in Windows Search)|Clear disk of temporary files (Disk Cleanup)|Move the swap file to another disk (if there is a second HDD)-->

⚠️ Attention: On laptops with dual-boot (Windows + Linux) or Hackintosh Replacing HDD with SSD may lead to loss of bootloader. Before replacing, create a backup copy of the boot partition!

4. Quick Solution: 5 Steps to Speed Up Your Laptop

If you don't have time to understand the reasons, follow these steps right now:

Close all programs via Task Manager (Ctrl+Shift+Esc)|Disable background processes (Startup tab)|Clear your browser cache (Ctrl+Shift+Del in Chrome/Firefox)|Reboot your laptop (do not use Sleep/Hibernate)|Check for viruses using Kaspersky Virus Removal Tool-->

These steps will help you 60–70% cases, but if the problem remains, read on.

5. Viruses and malware: how they steal resources

The laptop may slow down due to hidden miners (use CPU/video card to mine cryptocurrency), spyware (monitors keystrokes) or ad viruses (load memory with unnecessary processes). Signs of infection:

  • 🛡️ High CPU usage (50–100%) even in idle time.
  • 🌐 Slow Internet at normal speed on other devices.
  • 🔋 Rapid battery drain (viruses actively use the processor).
  • 📁 The appearance of unknown files (For example, .exe in a folder AppData).

How to check and remove viruses:

  1. Scanning in Safe Mode:
    • 🔄 Reboot your laptop by holding Shift (Windows) or Command+R (macOS).
    • 🛡️ Launch Kaspersky Rescue Disk or Dr.Web LiveUSB (download the image and burn it to a flash drive).
  • Checking startup: in Task Manager sort processes by Username — unknown entries may be viruses.
  • Network activity analysis: use Wireshark or the command: 
    netstat -ano | findstr "ESTABLISHED"

    Suspicious IP addresses (for example, from China or Russia if you are located in Europe) are a sign of a botnet.

    • Popular viruses that cause slowdowns:

    Virus type Signs How to remove
    Miner (XMRig, WannaMine) CPU Load 90–100% in idle time Malwarebytes + manual cleaning Task Scheduler
    Rootkit (Necurs, ZeroAccess) Blue screens (BSOD), slow loading GMER or reinstall Windows
    Adware (AdLoad, MacKeeper) Pop-ups, browser redirection AdwCleaner + reset browser
    💡

    If the antivirus does not find threats, but the laptop is slow, check task scheduler (taskschd.msc). Viruses are often disguised as tasks with names like WindowsUpdate or GoogleChromeAutoUpdate.

    6. Outdated software and drivers: why updates are important

    If the laptop was working fine, but suddenly began to slow down after updating Windows or macOS, the problem may be:

    • 🔄 Driver conflict: for example, old driver NVIDIA not compatible with the new version of Windows.
    • 🖥️ Broken system files: The update was interrupted or installed with errors.
    • 🔌 Non-optimized software: new versions Chrome or Zoom may require more resources.

    How to update drivers and software:

    1. Windows:
      • 🔧 Open Device Manager (Win+X).
      • 🖱️ Right click on the device (for example, Video adapters → NVIDIA GTX 1650) → Update driver.
      • 🌐 For automatic updates, use Driver Booster or Snappy Driver Installer.
    2. macOS: update the software via System settings → Software update.
    3. Manual installation: download drivers from the manufacturer's official website:

    If after updating the drivers the laptop began to slow down even more:

    ⚠️ Attention: Roll back the driver to the previous version! For this purpose in Device Manager select Properties → Driver → Roll Back. If the button is inactive, remove the driver and restart the laptop - the system will install the stable version automatically.

    7. Hardware problems: when it’s time for service

    If all software methods have been tried, but the laptop is still slow, the problem may be hardware. Here are the signs when you should contact the service:

    • 💥 Laptop shuts down without warning (even with a charged battery) - malfunction of the motherboard or power supply.
    • 🔊 Extraneous sounds from the case (grinding, clicking) - failure of the hard drive or cooler.
    • 🖥️ Artifacts on the screen (stripes, flickering) - problems with the video card or matrix cable.
    • 🔋 The battery does not hold a charge (discharges in 10–20 minutes) - wear of the battery or power controller.

    The most common hardware faults and their repair costs:

    Problem Diagnostics Repair cost (2026)
    Faulty RAM Test MemTest86 (errors in the test) 1,500–3,000 ₽ (replacement strip)
    SSD/HDD failure Errors CRITICAL_PROCESS_DIED on Windows or slow recording 3,000–8,000 ₽ (drive replacement + data transfer)
    Problems with north/south bridge Laptop won't turn on, no picture 5,000–15,000 ₽ (chip re-soldering)
    Battery wear Power → Battery report (Windows) 2,000–6,000 ₽ (battery replacement)

    If the laptop is under warranty:

    • 📄 Save the receipt and box - without them the warranty may not be valid.
    • 🔧 Do not open the case yourself (stickers with seals must be intact).
    • 💬 Describe the problem in as much detail as possible: "The laptop slows down when opening Chrome and playing games, the processor temperature reaches 95°C" instead of "Laptop is buggy".

    8. Optimize Windows and macOS for maximum performance

    Even on powerful laptops (MSI Titan, MacBook Pro M2) you can squeeze out additional 10–30% performance by disabling unnecessary system functions.

    For Windows 10/11:

    • 🎨 Disable visual effects: Settings → System → Advanced system settings → Performance → Customize → Get better performance.
    • 🔍 Disable indexing: Services → Windows Search → Startup type: Disabled.
    • 📥 Limit background loading: Settings → Update & Security → Optimization Delivery → Allow downloads from other computers: Off.
    • 🛡️ Disable Windows Defender (if you are using another antivirus): Settings → Update & Security → Windows Security → Virus Protection → Settings → Real-time Protection: Off.

    For macOS (Ventura/Monterey/Sonoma):

    • 🖼️ Disable animation: 
      defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool false
    • 🔄 Reset SMC and NVRAM:
      • Turn off your Mac.
      • Clamp Control+Option+Shift + power button for 10 seconds.
    • 🗑️ Clear cache: use OnyX or the command: 
      sudo rm -rf /Library/Caches/*
    💡

    On laptops with hybrid graphics (integrated + discrete graphics card, e.g. Intel UHD + NVIDIA MX150) forcefully switch graphics for programs. On Windows this is done via NVIDIA Control Panel, on macOS - in System Settings → Energy Saving.

    FAQ: Frequently asked questions about laptop brakes

    ❓ The laptop slows down only in games. What's the problem?

    Most likely to blame video card or overheating. Check:

    1. GPU temperature (should be below 85°C under load).
    2. Loading video memory: if it is full 90–100%, lower your graphics settings.
    3. Drivers: update them via GeForce Experience (NVIDIA) or Adrenalin (AMD).

    If FPS drops after 10–20 minutes of play, the problem is throttling (see section 1).

    ❓ Why does the laptop take a long time to turn on (5-10 minutes)?

    Reasons:

    • Slow HDD - replace with SSD.
    • Too many programs in startup - disable unnecessary ones.
    • Damaged system files - run the command: 
      sfc /scannow
    • BIOS/UEFI reset - Update the motherboard firmware.
    ❓ The laptop slows down after updating Windows. What to do?

    Revert to previous version:

    1. Open Settings → Update & Security → Recovery.
    2. Click Go back to a previous version of Windows (available for 10 days after update).

    If the option is not available, try:

    • Roll back drivers (see section 6).
    • Perform a clean installation of Windows, saving files.
    ❓ MacBook slows down after updating macOS. How to fix it?

    The problem is typical for models 2015–2017 (MacBook Pro 13", MacBook Air) due to unoptimized software for older processors. Solutions:

    • 🔄 Roll back to a previous version of macOS via Recovery (Command+R when loading).
    • 🧹 Clear system cache: 
      sudo rm -rf /Library/Caches/com.apple.finder.cache
    • 🔧 Disable FileVault And iCloud Drive (they put a lot of stress on old SSDs).
    ❓ How to check if your laptop has enough RAM?

    Open Resource Monitor (Windows) or System monitoring (macOS) and look at the graph Memory usage:

    • 🟢 Free >20%: Enough memory.
    • 🟡 Free 10–20%: You should close unnecessary programs.
    • 🔴 Free <10%: you need to add RAM or optimize the system.

    On Windows also pay attention to Hard page crash — if the value is high, the system actively uses the swap file (slowdowns are inevitable).