Why the laptop turns on slowly and slows down: a complete analysis of the reasons + 15 ways to speed up the system

You pressed the power button, but instead of the usual 10-20 seconds, several minutes pass before the desktop appears? And after loading, the cursor twitches, programs take forever to open, and the laptop fans work like an airplane turbine? These symptoms are familiar to millions of users - and “weak technology” is not always to blame. Even powerful ones ASUS ROG, Lenovo Legion or MacBook Pro with M1/M2 may turn into a “snail” due to software glitches, overheating or non-optimal settings.

In this article - analysis of all possible reasons slow loading and brakes, from a banal startup blockage to critical hard drive errors. We won't advise "buy an SSD" (although that often helps) - instead we'll give specific instructions, how to diagnose the problem and fix it without losing data. And at the end - a checklist for a quick check of your laptop.

1. Autoboot: why the laptop “thinks” for 5 minutes when turned on

The most common reason for long loading times is oversaturated startup. Every program on this list takes up CPU and RAM resources before you even see the desktop. For example, Steam, Discord, NVIDIA GeForce Experience and even Adobe Creative Cloud can add up to 5-7 background processes each to startup.

How to check? B Windows 10/11 click Ctrl + Shift + Esc, go to the tab Autoload. B macOS open System Settings → Users and Groups → Login Items. If there are more than 10 points, this is already a reason for optimization.

• 🔍 Diagnostics: Sort programs by the Impact on Download column (on Windows). Anything marked as “High” is a candidate for deletion.
• ⚡ Solution: Disable unnecessary programs (for example, iTunes Helper, QuickTime, printer driver updates). Leave only antivirus and critical utilities.
• ⚠️ Exception: Do not disable system processes with names svchost.exe, ctfmon.exe or SecurityHealthService - this can lead to failures.

Critical moment: if a process hangs in startup Runtime Broker with high CPU consumption (over 20%), this is a sign of corrupted Windows updates. The solution is to reset the update components using the command net stop wuauserv in CMD (administrator).

2. Hard disk (HDD) vs SSD: why the difference in loading speed can be 10-fold

Laptops with traditional HDD drives (For example, Seagate Barracuda or Western Digital Blue) physically cannot load quickly. Average read speed of HDD - 80-120 MB/s, whereas even a budget SSD (For example, Kingston A400) issues 500 MB/s and above. The difference is felt already when you turn it on:

But what to do if it is not possible to replace the HDD with an SSD? Here 3 ways to speed up your old hard drive:

1. Defragmentation: On Windows, run dfrgui through Win + R. On macOS, use the utility DriveDX.
2. Disabling indexing: Go to Properties of drive C: → General → Uncheck "Allow indexing...".
3. Checking for bad sectors: B CMD (administrator) enter chkdsk C: /f /r and reboot.

3. Viruses and malware: how they steal your laptop's resources

Malware can work unnoticed, but at the same time:

• 🕵️‍♂️ Mine cryptocurrency in the background (CPU consumption up to 100%).
• 📤 Send spam through your IP (slows down the Internet).
• 🔑 Steal data (keyloggers load RAM).

How to check? Open Task Manager (Ctrl + Shift + Esc) and sort the processes by CPU or Memory. Suspicious names like svchost.exe *32 (with high consumption), WMI Provider Host (if the disk loads 100%) or unknown .exe in a folder Temp - a signal to action.

Start scan in Kaspersky Virus Removal Tool|Check folder C:\Users\Your_name\AppData\Roaming for suspicious files|Disconnect your laptop from the network (so that the virus does not spread)|Check browser extensions (especially Chrome And Edge)

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⚠️ Attention: Some viruses block the installation of antivirus software. If you can't download Dr.Web CureIt! or Malwarebytes, boot into Safe Mode with Networking (click F8 when loading or use msconfig).

4. Overheating: why does the laptop slow down after 10 minutes of operation?

If the laptop starts to lag a few minutes after turning it on, and the case is hot, the problem is overheating. Critical temperature for most processors:

• Intel Core i5/i7 — 95-100°C (throttling starts with 85°C).
• AMD Ryzen 5/7 — 90-95°C.
• Apple M1/M2 — 100°C (but already at 80°C performance decreases).

How to check the temperature? Use the utilities:

• 🌡️ HWMonitor (Windows)
• 🌡️ iStat Menus (macOS)
• 🌡️ Core Temp (for Intel processors)

If the temperature is above normal:

1. Clean the laptop from dust (especially the ventilation grilles and radiator).
2. Replace thermal paste (for Intel will do Arctic MX-6, for AMD — Noctua NT-H2).
3. Use a cooling pad (such as Cooler Master NotePal X3).
4. Disable Turbo Boost in the BIOS (if the laptop constantly overheats).

5. Lack of RAM: when 8 GB is not enough

In 2026 8 GB RAM - this is the minimum for office work, but not enough for:

• 🎮 Modern games (Cyberpunk 2077, Alan Wake 2 require 16 GB+).
• 🎬 Video editing in Adobe Premiere or DaVinci Resolve.
• 👨‍💻 Simultaneous work with Photoshop, 10+ Chrome Tabs And Visual Studio.

How to understand that there is not enough memory? Open Task Manager → Memory. If in the column Used constantly 70-90% - it's time to act.

Solutions (from simple to complex):

1. Close unnecessary programs. For example, Telegram And Slack can borrow 500 MB everyone.
2. Use lightweight alternatives. Replace Chrome on Firefox or Edge (they consume on 20-30% less memory).
3. Activate the swap file. On Windows: Control Panel → System → Advanced Settings → Performance → Settings → Advanced → Change. Set size 1.5 × of RAM capacity.
4. Add RAM. Check compatibility via Crucial System Scanner or CPU-Z (tab SPD).

6. Windows/macOS errors: when the system harms itself

Even a “clean” operating system can slow down due to:

• 🔄 Damaged updates. For example, Windows 11 23H2 has a bug with high disk load due to SearchIndexer.exe.
• 🗑️ Fragmented registry. In Windows 10/11, the registry is cleaned automatically, but after failures, “tails” may remain.
• 🍎 Failures in macOS. For example, error kernel_task with CPU load up to 200-400% (can be treated by resetting SMC And NVRAM).

1. Откройте CMD (администратор) и выполните:
sfc /scannow
dism /online /cleanup-image /restorehealth
2. Перезагрузитесь.
3. Если не помогло, вернитесь к точке восстановления:
rstrui.exe

How to fix macOS:

1. Выключите Mac.
2. Нажмите Power + Command + Option + P + R (10 секунд).
3. Отпустите клавиши — это сбросит NVRAM.
4. Для сброса SMC:
- На MacBook с несъемным аккумулятором: Shift + Control + Option + Power (7 секунд).