Has your laptop suddenly started to choke when you open multiple browser tabs? Or does the cursor twitch and programs take 10-20 seconds to launch? Brakes are one of the most common problems that users encounter 1-3 years after purchasing a device. But don’t rush to take your equipment to a service center: in 80% of cases, the reasons lie in the software settings, and not in the hardware.

In this article we will look at all possible causes of brakes - from banal overheating to hidden viruses that steal system resources. You will learn how diagnose the problem yourself (even without special programs), what Windows or macOS settings remove lags, and when it’s really time to think about an upgrade. And for those who don’t want to read everything, at the end there is FAQ with answers to frequently asked questions.

1. Overheating: why the laptop “chokes” itself

If the laptop starts to slow down after 10-15 minutes of operation, and the case becomes hot, it’s the fault thermal throttling. This is a defense mechanism in which the processor artificially reduces performance to avoid burning out. Causes of overheating:

  • 🧹 Dust in the cooling system — clogs fans and radiators, impairing heat dissipation.
  • 🔋 Dried thermal paste - after 2-3 years it loses its properties, and the processor heats up even when idle.
  • 🖥️ Working on a soft surface (bed, sofa) - blocks ventilation holes.
  • 🔥 Cooler malfunction — if the fan does not spin or makes a grinding noise.

How to check the temperature? Use utilities like HWMonitor (Windows) or iStat Menus (macOS). Normal values:

ComponentNorm (load)Critical temperature
Processor (CPU)60–85°C95°C+
Video card (GPU)65–85°C100°C+
Hard disk (HDD)up to 45°C60°C+
SSDup to 70°C80°C+

If the processor temperature exceeds 90°C during simple work (for example, in Word or a browser), cleaning the laptop is mandatory - further use will lead to degradation of the chip.

⚠️ Attention: Do not use a vacuum cleaner to clean your laptop! Static electricity can damage the motherboard. It is better to use a can of compressed air or contact a service center.
📊 How often do you clean your laptop from dust?
  • Once every 3–6 months
  • Once a year
  • Only when it starts to warm up
  • Never cleaned

2. Autostart load: why the laptop slows down when turned on

If Windows or macOS takes longer than 1-2 minutes to load, and after starting the system freezes for 5-10 minutes, the programs are to blame startup. Many applications (especially instant messengers, antiviruses and “optimizers”) are added there without your knowledge and eat up to 30% of RAM.

How to check startup:

  • 🪟 Windows: Click Ctrl + Shift + Esc → go to the tab Autoload. Sort by Column Impact on launch.
  • 🍎 macOS: Open System Settings → Users and Groups → Login Items.

Typical "gluttonous" programs in startup:

Mouse/Keyboard Utilities (Logitech, Razer)

Cloud storage (OneDrive, Google Drive)

Messengers (Telegram, Discord - it’s better to launch manually)

Game launchers (Steam, Epic Games, Origin)

“Optimizers” (CCleaner, Advanced SystemCare)-->

On Windows 10/11 You should also disable unnecessary services. To do this:

  1. Click Win + R, enter msconfig.
  2. Go to the tab Services → check the box Don't show Microsoft services.
  3. Disable everything except antivirus and drivers (for example, NVIDIA or Intel).
⚠️ Attention: Don't disable services with names Windows Audio, Superfetch (aka SysMain in Win 11) or Windows Update - this will lead to system errors.

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

If the laptop starts to slow down when opening 10+ tabs in the browser or starting Photoshop/AutoCAD, the problem is lack of RAM. Modern programs require more and more memory:

  • 🌐 Browsers: One Chrome/Edge tab with a social network “weighs” 500–800 MB. 10 tabs = 5–8 GB RAM.
  • 🎮 Games: GTA V - 4–6 GB, Cyberpunk 2077 - 8–12 GB.
  • 📷 Graphic editors: Adobe Premiere or Blender can eat up to 16 GB.

How to check RAM load:

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

Solutions to the problem:

What to do if there is not enough RAM?

  1. Close unnecessary programs. In Task Manager, sort processes by memory usage and terminate "hungry" ones (for example, svchost.exe with high intake may be a virus).
  2. Use lightweight analogue programs. For example, instead of Chrome — Firefox or Edge (they are optimized for Windows 11), instead Photoshop — GIMP or Photopea (online).
  3. Add RAM. Majority laptops allow an upgrade to 16–32 GB. Check the maximum amount of RAM for your model on the manufacturer's website (for example, Crucial System Scanner).
  4. Enable the swap file. On Windows: Control Panel → System → Advanced system settings → Performance → Settings → Advanced → Virtual memory. Set size 1.5 × [RAM capacity] (for example, for 8 GB of RAM - 12 GB of page file).

If you have 4GB of RAM or less, upgrading to 8-16GB will give you up to a 40-60% boost in multitasking performance.

4. Hard disk (HDD) vs SSD: why old laptops are slow

If your laptop was released before 2018 and has HDD (hard drive), not SSD - This is the main reason for the brakes. Speed difference:

ParameterHDD (hard disk)SSD (Solid State Drive)
Reading speed80–160 MB/s500–3500 MB/s
Write speed80–160 MB/s300–3000 MB/s
Windows boot time30–60 seconds5–15 seconds
Noise/vibrationYes (clicking, buzzing)No
Impact resistanceLow (risk of data loss)High

How to check disk type:

  1. On Windows: open Task Manager → tab Performance → Disk. If it says in the upper right corner HDD - your drive is out of date.
  2. On macOS: open About this Mac → System report → Storage. Look for the line Media type.

What to do if there is a HDD:

  • 🔄 Replace with SSD. Even budget SATA SSD (For example, Kingston A400 or Crucial BX500) will speed up your laptop by 3–5 times. Cost - from 2000 rubles for 240 GB.
  • 🧹 Optimize your current HDD. Defragment (Disk optimization on Windows) and clearing temporary files (Disk Cleanup).
  • 🚫 Do not fill the disk completely. Leave at least 10-15% free space (for example, a 500 GB drive should have 50-75 GB free).
💡

Before replacing HDD with SSD, back up your data using Macrium Reflect (Windows) or Time Machine (macOS). Disk cloning will take 1-2 hours, but will save all programs and settings.

5. Viruses and malware: hidden productivity stealers

If the laptop suddenly starts to slow down, and Task Manager unknown processes are hanging with a high load on the CPU or network - probable virus attack. Modern viruses are not always noticeable: they can disguise themselves as system files or work in the background, mining cryptocurrency on your processor.

Signs of infection:

  • 🖥️ The laptop slows down even when idle (without running programs).
  • 🌐 Slow Internet, although the speed according to tests is normal.
  • 🔋 Fast battery drain (viruses load the CPU by 100%).
  • 📁 Unknown files or folders appear (for example, ~$*.tmp).

How to check the system:

  1. Open Task Manager and sort the processes by CPU or Network. Look for suspicious names (eg. svchost.exe with 50% load or WindowsHostManager).
  2. Use Process Explorer (a utility from Microsoft) - it will show which files are open by the process.
  3. Check the network: at the command line, enter (Win + R → cmd): 
    netstat -ano | findstr "ESTABLISHED"

    If there are many unknown IP addresses in the list, your laptop may be part of a botnet.

How to treat:

Turn off the Internet (so that the virus does not download updates)

Run a scan Kaspersky Virus Removal Tool or Dr.Web CureIt!

Check the registry for suspicious entries (via regedit)

Update Windows/macOS to the latest version (many viruses exploit outdated vulnerabilities)

Change passwords for important accounts (viruses can steal them) -->

⚠️ Attention: Some viruses block the installation of antivirus software. In this case, boot the system to Safe Mode (on Windows - hold Shift when rebooting) and repeat the scan.

6. Outdated drivers and hardware conflicts

If your laptop slows down after updating Windows or connecting a new device (for example, a printer or game controller), it’s your fault drivers. Outdated or incorrectly installed drivers can cause:

  • 🖱️ Cursor or keyboard freezes.
  • 🎮 Artifacts in games (stripes, flickering).
  • 🔊 Problems with sound (crackling, lack of sound).
  • 📡 Loss of Wi-Fi or Bluetooth connection.

How to update drivers:

  1. Automatically: On Windows, open Device Manager (Win + X → Device Manager), find the device with a yellow exclamation mark, right-click → Update driver.
  2. Manually: Download the driver from the manufacturer's official website (for example, for a video card NVIDIA - from the site nvidia.ru, for Intel — with intel.ru).
  3. For macOS: Update the system via System settings → Software update.

Typical driver problems:

SymptomProbable CauseSolution
Laptop slows down when watching videosOutdated video card driverUpdate your driver NVIDIA/AMD/Intel
Touchpad or keyboard does not workDriver conflict Synaptics/ELANUninstall the driver in Device Manager and reboot
Laptop won't wake up from sleep modePower management driver problemUpdate BIOS and chipset driver
💡

If the problem gets worse after updating the driver, roll it back: in Device Manager, right-click on the device → Properties → Driver → Roll Back.

7. Disk fragmentation and junk files

Over time, files on the disk become scattered across different sectors (fragmented), and the system takes more time to collect them. This is especially true for HDD - on SSD fragmentation has almost no effect on speed.

How to check fragmentation (HDD only):

  1. Open Disk optimization (type in Windows search).
  2. Look at the column Current status. If the value is > 10%, the disk needs defragmentation.

How to clean your system of junk:

  • 🗑️ Temporary files: Click Win + R, enter %temp% and delete everything from the folder.
  • 📁 Browser cache: B Chrome go to Settings → Privacy → Clear history (select Cookies and cache).
  • 🔄 Disk Cleanup: Enter in search Disk Cleanup, select drive C: and remove unnecessary files (especially Cleaning Windows Updates).
  • 🧹 Third party utilities: BleachBit (similar to CCleaner, but without ads) or Wise Disk Cleaner.

For macOS:

  1. Open System monitoring → tab Storage → Management.
  2. Remove unnecessary files from the partition Garbage And Duplicates.
  3. Clear cache via Terminal: 
    sudo periodic daily weekly monthly

    rm -rf ~/Library/Caches/*

FAQ: Answers to frequently asked questions about laptop brakes

Why does my laptop slow down after updating Windows?

Reasons:

  1. Driver conflict. New Windows updates may break old drivers (especially video cards or Wi-Fi). Solution: Update the drivers manually from the manufacturer's website.
  2. Background indexing. After major updates, the system will re-index files for search. Wait 1–2 hours or disable indexing: Control Panel → Indexing Options → Edit → Uncheck Drives.
  3. Viruses in updates. Extremely rare, but it does happen (for example, in 2021, hackers introduced malicious code into an update SolarWinds). Check the system Malwarebytes.
The laptop slows down in games, although the characteristics are good. What's the matter?

Common reasons:

  • Temperature throttling. Games load the GPU/CPU at 100%, and if the cooling is weak, the FPS drops. Check the temperature in MSI Afterburner.
  • Lack of RAM. Modern games require 16 GB of RAM. If you have 8 GB, close all background programs.
  • Video card driver. Uninstall the current driver via Display Driver Uninstaller (DDU) and install the latest one from the site NVIDIA/AMD.
  • Background processes. Disable NVIDIA GeForce Experience, Discord, Steam in startup.
  • Graphics settings. In games, reduce Shadows, Reflections And Antialiasing — they load the GPU the most.
MacBook gets very slow after updating macOS. What to do?

Solutions for macOS:

  1. Reset NVRAM/PRAM. Turn off your MacBook, then turn it on and immediately press Command + Option + P + R for 20 seconds.
  2. Clear cache. Open Terminal and enter: 
    sudo purge

    rm -rf ~/Library/Caches/*

  3. Turn off visual effects. Go to System Settings → Accessibility → Display and turn it on Reduce Opacity.
  4. Check compatibility. Old MacBooks (pre-2015) may not support new versions of macOS. Install a lighter system, e.g. macOS Monterey instead of Ventura.
The laptop slows down when connected to Wi-Fi. What's the problem?

Possible reasons:

  • Wi-Fi driver. Update it via Device Manager (section Network adapters).
  • Network overload. If >10 devices are connected to the router, the speed drops. Reboot your router.
  • DNS server. Try changing DNS to 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).
  • Viruses. Some Trojans use your Wi-Fi for DDoS attacks. Check the network in Wireshark.
  • Power settings. On Windows, go to Control Panel → Power Options → Circuit Settings → Advanced Settings and set for Wireless adapter mode Maximum performance.
How to speed up an old laptop without upgrading?

Optimization methods:

  1. Install a lightweight OS. Suitable for weak laptops (2–4 GB RAM) Linux Mint or Windows 10 LTSC (light version without unnecessary services).
  2. Turn off visual effects. On Windows: Control Panel → System → Advanced Settings → Performance → Settings → Get better performance.
  3. Use cloud services. Instead of heavy programs (for example, Photoshop) use online analogues: Photopea, Canva, Google Docs.
  4. Limit background processes. B Task Manager disable unnecessary services (for example, Windows Search, if you don't use search).
  5. Add RAM via a USB flash drive. Windows has a function ReadyBoost: connect a USB drive (minimum 4 GB), right click → Properties → ReadyBoost.