Why the laptop slows down and how to fix it yourself

Has your laptop started to work like a “snail on crutches”? Applications take minutes to open, videos lag, and even simple scrolling of pages is accompanied by annoying freezes? The problem of slow operation is one of the most common among budget users Lenovo IdeaPad, and bonus MacBook Pro. But before you take the device to a service center (where they will charge 1-3 thousand rubles for diagnostics), try to figure it out yourself.

In 80% of cases, laptop brakes are not due to hardware failures, but to software “contamination”: background activity, outdated software or incorrect system settings. This article will help identify exact reason slowdown and eliminate it without losing data - from basic actions (cleaning the disk) to advanced ones (optimizing the registry or replacing thermal paste). We will look at solutions for Windows 10/11, macOS And Linux, and also give a checklist for diagnosing the hardware.

1. Diagnostics: why is the laptop slow?

The first step is to determine what exactly is causing the brakes: software or hardware. To do this, just observe the behavior of the device:

• 🔍 Software reasons: laptop slows down unpredictable - then everything is fine, then suddenly it freezes. Often accompanied by error messages or high CPU/RAM usage in Task Manager.
• 🖥️ Hardware reasons: brakes permanent and progress over time. The laptop heats up, the fan makes noise, or slows down even under minimal load (for example, in a text editor).
• 🔋 Nutrition problems: The brakes only appear when running on battery power. B Control Panel → Power Options Energy saving mode may be activated.

For a quick check, open Task Manager (combination Ctrl + Shift + Esc) and look at the tabs "Processes"** and **"Performance"**:

• If CPU loaded at 90-100% for no apparent reason - the software is to blame (viruses, background processes).
• If RAM packed to capacity (90%+), and less than 1 GB free - you need to clean or upgrade the RAM.
• If disk (HDD/SSD) is constantly loaded at 100% - the problem is in drivers, fragmentation or a “dying” drive.

A critical sign of a hardware failure: the laptop slows down even in the BIOS (before the OS loads). This means problems with the hard drive, RAM or motherboard.

2. Cleaning the system of garbage and temporary files

The most common cause of brakes is clogged system. Temporary files, browser caches, remnants of uninstalled programs and duplicate documents can take up tens of gigabytes of space and slow down your work. Let's start with basic cleaning.

Windows 10/11

Use built-in tools:

1. Open Settings → System → Device memory and press "Clear Now"** under the section "Disk Cleanup"**.
2. Run Disk Cleanup (enter the name in the search). Select drive C:, check all the boxes and confirm deletion.
3. Delete temporary files manually: go to C:\Users\Your_name\AppData\Local\Temp (turn on showing hidden files!) and delete all contents of the folder.

1. About the program → Memory → click “Manage”** to remove unnecessary files.
2. utility CleanMyMac X (paid, but there is a trial period).
3. Manual cache clearing: open ~/Library/Caches and delete the contents of the folders (do not touch system files!).

Attention! Don't use "optimizers" like MacKeeper — they often contain malicious code and themselves cause slowdowns.

sudo apt clean && sudo apt autoclean  # Очистка кэша пакетов
sudo journalctl --vacuum-time=2weeks  # Очистка логов старше 2 недель
rm -rf ~/.cache/*  # Удаление кэша пользователя

sudo du -h --max-depth=1 / | grep '[0-9]\+G'  # Показывает папки >1 ГБ

1. Open Task Manager → Startup.
2. Sort programs by column “Impact on startup”** and disable everything unnecessary (except antivirus and drivers).
3. To completely remove it from startup, use Autoruns from Microsoft (advanced tool).

Examples of programs that can be safely disabled:

systemctl --user list-unit-files --state=enabled  # Показывает активные сервисы
systemctl --user disable имя_сервиса.service  # Отключает сервис

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