The laptop slows down and freezes: how to find the cause and fix the problem

Slow laptop performance is one of the most annoying problems faced by every user. The system suddenly begins to “think” when opening applications, the video slows down, and the cursor freezes for several seconds. In some cases, the laptop is completely freezeswithout responding to the keyboard or touchpad. The reasons for this behavior can be either software (OS overload, viruses) or hardware (overheating, hard drive wear).

In this article we will look at all possible causes of brakes - from a banal lack of RAM to hidden BIOS errors, and we’ll also give step by step instructionshow to diagnose and fix the problem. We will pay special attention hidden settings of Windows 10/11 that can dramatically improve performance without upgrading hardware. If your laptop began to perform worse after an update, after replacing components, or for no apparent reason, here you will find a solution.

1. Overheating: why the laptop “suffocates” and how to check it

Overheating is the most common cause sudden freezes, especially in gaming laptops and ultrabooks with compact bodies. When the temperature of the processor or video card exceeds 90–95°C, the system automatically throttlit (reduces) frequencies to prevent damage to chips. As a result, the laptop begins to slow down, freeze the video, or turn off completely.

You can check the temperature using the following utilities:

• 🔥 HWMonitor — shows CPU/GPU temperature, voltage and load.
• 🌡️ Core Temp — specializes in monitoring processors Intel And AMD.
• 💻 MSI Afterburner — convenient for gamers (displays FPS and temperature in the game).

Normal temperatures under load:

• Processor: 70–85°C (maximum 95°C short term).
• Video card: 75–85°C (for NVIDIA RTX And AMD Radeon).

If the values are higher, the thermal paste needs to be cleaned or replaced.

⚠️ Attention: If the laptop turns off at temperatures below 90°C, the problem may be faulty sensor or broken BIOS settings. In this case, resetting the BIOS to factory settings will help (see section 6).

2. Lack of random access memory (RAM): how to free up resources

If the laptop slows down when opening several browser tabs or starting Photoshop/AutoCAD, the shortage is to blame random access memory (RAM). Modern applications and websites consume huge amounts of resources. For example, one tab YouTube in 1080p may take up to 1–1.5 GB RAM, and Chrome with 10 tabs it easily “eats” 4–5 GB.

You can check memory load via:

• 🖥️ Task Manager (Ctrl+Shift+Esc → “Performance” tab).
• 📊 Resource Monitor (Memory tab in task manager).

If the memory is loaded on 90%+, try:

Close unnecessary programs in Task Manager

Disable background processes in Settings → Applications → Startup

Use lightweight alternatives (eg. Firefox instead of Chrome)

Add a swap file (see instructions below)

Increase physical memory (if there is a free slot)

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To add swap file (virtual memory):

1. Open Control Panel → System → Advanced system settings.
2. In the Performance section, click Options → Advanced → Edit.
3. Uncheck "Automatically select paging file size" and check Original size equal to the amount of RAM, and Maximum - 1.5–2 times more.
4. Restart your laptop.

⚠️ Attention: Swap file on SSD speeds up work, but reduces storage life. If you have HDD, place the paging file on it, and not on the system drive.

3. Central processing unit (CPU) load: who “steals” power

If the laptop slows down even under minimal load (for example, when printing in Word), check the download central processor. Often the culprits are:

• 🦠 Hidden mining scripts in the browser or viruses.
• 🔄 Background updates (Windows, drivers, antivirus).
• 📁 Indexing files for Windows search.
• 🎮 Unoptimized games or programs (for example, Blender, Sony Vegas).

How to find the “culprit”:

1. Open Task Manager (Ctrl+Shift+Esc).
2. Sort processes by column CPU (descending).
3. If an unknown process is hogging the CPU 30%+, check it through VirusTotal or Malwarebytes.

Typical CPU eaters:

4. Slow hard drive (HDD) or problems with SSD

If laptop takes a long time to load, programs open with a delay, and files are copied at a speed 20–30 MB/s, the problem is most likely in drive. HDD degrade over time, and SSD can go into mode read-only when the resource of records is exhausted.

You can check the disk status using the following tools:

• 💾 CrystalDiskInfo - shows S.M.A.R.T.-status and temperature.
• 📉 HD Tune — tests read/write speed.
• 🔧 Victoria HDD — deep diagnostics of bad sectors.

Signs "dying" HDD:

• 🛑 Permanent freezing when accessing the disk.
• 🔊 Extraneous sounds (clicks, grinding).
• 🐢 Reading speed is lower 50 MB/s.
• 🚨 Bugs CRC or I/O when copying files.

If the diagnostics show problems, follow the algorithm:

⚠️ Attention: If SSD switched to mode read-only, it is impossible to restore it - replacement is required. This mode is activated when the resource of memory cells is exhausted (usually after 300–500 TBW for budget models).

5. Viruses and malware: how to detect and remove

Malicious programs are one of the most insidious causes of slowdowns. They can:

• 🕵️‍♂️ Spy behind you (keyloggers, backdoors).
• 💰 Mine cryptocurrency in the background.
• 📤 Steal data (passwords, cookies).
• 🚫 Block the system (ransomware).

Signs of infection:

• Laptop slows down even in idle mode.
• Unexpectedly growing network traffic (check in Task Manager).
• Appear unfamiliar processes in startup.
• Browser redirects to suspicious sites.

How to check and clean the system:

1. Download Kaspersky Virus Removal Tool or Dr.Web CureIt! (portable versions that do not require installation).
2. Start scanning at safe mode (click F8 when loading or use msconfig).
3. Remove any threats found and check startup (Task Manager → Startup).
4. Update all drivers and Windows (viruses often exploit vulnerabilities in older versions).

For advanced users:

// Проверка подозрительных сетевых соединений в Command Prompt
netstat -ano | findstr "ESTABLISHED"

If there are unknown IP addresses in the list, check them through VirusTotal.

6. Outdated or incompatible drivers

Drivers are “intermediaries” between hardware and the operating system. If they are outdated or installed incorrectly, the laptop may slow down, lose connection to Wi-Fi, or issue blue screens of death (BSOD) or not turn on the discrete video card at all.

How to check drivers:

1. Open Device Manager (Win+X → Device Manager).
2. Check sections with exclamation marks (usually Video adapters, Network adapters, Sound devices).
3. Update drivers manually or via Driver Booster/Snappy Driver Installer.

Typical driver problems:

For laptops with hybrid graphics (Intel + NVIDIA/AMD) important:

• Install drivers in the right order: first Intel, then a discrete video card.
• Set up switchable graphics in NVIDIA Control Panels or AMD Catalyst.
• Disable unnecessary effects in Windows (Settings → Accessibility → Transparency effects).

7. Disk fragmentation and garbage in the system

Over time, the files on HDD fragmented (broken into pieces), and the system becomes clogged with temporary files, caches and remnants of deleted programs. This leads to:

• 🐢 Windows loads slowly.
• 🗃️ Long opening of folders and files.
• 🔄 Freezes when installing updates.

How to clean the system:

Launch Disk Cleanup (cleanmgr on the command line)

Delete temporary files via %temp% And temp in Explorer

Clear browser cache (Chrome, Firefox, Edge)

Carry out defragmentation (only for HDD!) via dfrgui

Delete old restore points (Control Panel → Recovery → Set up system recovery)

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For SSD defragmentation prohibited — use the command instead:

// Оптимизация SSD в Command Prompt (от имени администратора)
defrag C: /L

Useful utilities for deep cleaning:

• 🧹 CCleaner — deletes cache, temporary files and cleans the registry.
• 🗑️ BleachBit — a more aggressive alternative (even clears system logs).
• 🔍 TreeSize — shows which folders take up the most space.

⚠️ Attention: Don't use "registry optimizers" like RegCleaner or Wise Registry Cleaner — they often break the system by deleting critical keys. To clean the registry, a built-in utility is enough regedit (manual cleaning) or CCleaner (in “Safe Cleaning” mode).

8. Problems with power and BIOS settings

Incorrect power or BIOS settings can artificially limit laptop performance. For example:

• 🔋Mode Energy Saving reduces CPU/GPU frequencies.
• ⚡ Disabled in BIOS Turbo Boost or Hyper-Threading.
• 🔌 The laptop runs on battery power, and there is a performance limit set in the power settings.

How to check power settings:

1. Open Control Panel → Power Options.
2. Select a scheme High performance.
3. Click Set up power plan → Change advanced settings.
4. Make sure that:
• Maximum processor performance: 100%.
• PCI Express Power: Maximum performance.
• PCI Express link status: Off (if available).

BIOS check:

1. Reboot your laptop and enter the BIOS (usually F2, Del or Esc).
2. Find sections Advanced → CPU Configuration and make sure that:
• Intel Turbo Boost / AMD Turbo Core: Enabled.
• Hyper-Threading / SMT: Enabled.
• C-States: Disabled (if the laptop slows down when idle).

If after changing the BIOS the laptop does not turn on, reset the settings:

• Remove the battery and disconnect the power supply.
• Press and hold the power button 30 seconds (capacitor discharge).
• Remove CMOS battery (coin type) on 5 minutes.

FAQ: Answers to frequently asked questions

# Проверка загрузки CPU
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# Мониторинг дисковой активности
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# Проверка температуры
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