Quick answer
If your laptop won't turn on, the safest approach is to remove the disk and connect it to another computer via a USB adapter or external enclosure. Before that, disconnect the power and battery, and if the disk is encrypted with BitLocker, have the recovery key ready. If the disk is not recognized or you hear clicking, do not attempt it yourself; contact a service center.
How to recognize the problem
- Laptop does not turn on or turns off immediately after powering on
- No image on screen but fans are spinning
- An error message appears during system boot
- Disk is not visible in BIOS or makes an unusual noise
Most common causes
Faulty power supply or battery
The laptop may not be receiving power at all, so it won't start even if the disk is fine. Check the charger and power indicators.
Motherboard or RAM failure
If the laptop shows no signs of life or restarts, the problem may be with the motherboard or memory, not the disk.
Faulty or damaged disk
The disk may be physically damaged or have bad sectors, preventing the system from booting. In that case, it's important to rescue data as soon as possible.
Operating system or boot sector failure
Windows may be corrupted due to an interrupted update or a crash, so the laptop won't boot even though the hardware is fine.
Step-by-step fix
- 1
Turn off the laptop and remove the external battery
Completely shut down the laptop and unplug the power cable. If the battery is external and easy to remove, take it out. If the battery is internal, do not remove it yourself if you lack experience; follow the service manual. Wait a few minutes before further steps.
- 2
Open the case and remove the disk
Carefully open the bottom cover of the laptop with a screwdriver. Locate the disk (HDD or SSD), disconnect the cable, and remove it. If you're unsure how, look for the service manual for your model or leave it to a service center.
- 3
Connect the disk to another computer
Use a USB adapter for SATA or NVMe disks, or an external enclosure. Connect the disk to a working computer and wait for the system to recognize it. On Windows, check Disk Management to see if it appears.
- 4
Copy the data to a safe location
Open the disk in File Explorer and copy important folders to an external drive or cloud. Do not move files directly from the disk; copy them first. If the disk is not visible, skip to step 7.
- 5
If the disk is encrypted, use the recovery key
If BitLocker is enabled, Windows will ask for the recovery key. Find it in your Microsoft account or a printed copy. Without the key, the data remains inaccessible.
- 6
Check disk health
After copying important data, optionally check the disk status. In Windows, open Command Prompt as administrator and run
chkdsk X:without the/foption (replace X with the drive letter). Do not runchkdsk /fon a physically damaged disk. If you suspect physical failure, skip this step. If there are many errors, stop and contact a service center. - 7
If the disk is not recognized, try another adapter
Sometimes the problem is with the USB adapter or cable. Try another adapter or another USB port. If the disk is still not visible, it is likely physically faulty.
- 8
Use a Live USB to access data
If you cannot access the disk through Windows, create a Linux Live USB (e.g., Ubuntu) and boot the computer from it. Then you can copy files if the disk is functional.
If nothing helps: professional data recovery
If the disk is not recognized on any computer, if you hear clicking, or if the laptop was exposed to impact or water, do not attempt to open the disk yourself. That can permanently destroy data. Contact a professional data recovery service that works in a clean room. For business users, a pre-arranged service and regular backups shorten downtime. Always keep a copy of important data elsewhere, because hardware failure can happen without warning.
How to prevent it
- Regularly back up to an external disk or cloud
- If you enable BitLocker, always save the recovery key in a safe place
- Do not carry the laptop in a bag without protection and avoid impacts
- Monitor disk health and replace it in time
When to call a professional
Contact IT support or a service center if the disk is not recognized, if you hear an unusual noise, or if you cannot access data due to encryption. Opening a faulty disk yourself can permanently destroy data.
IT infrastructure maintenance · Servers, networks, backup, security and helpdeskFAQ
Can I remove the disk from the laptop myself?
You can if you have the right screwdriver and follow the service manual. If the laptop is under warranty, opening it may void the warranty, so check the terms before you start.
What if the disk is encrypted with BitLocker?
You will need the recovery key. Look for it in your Microsoft account or a saved copy. Without the key, the data cannot be read on another computer either.
How much does professional data recovery cost?
The price depends on the type of failure and the amount of data. For physically damaged disks, it is usually more expensive. Inquire with authorized service centers and ask for an estimate before repair.