After switching off our Dell PC, it may fail to turn on and only boot into Windows. You may likely see error messages such as “No Bootable Device”, “No Boot Device”, or “Boot Device Not Found”.
When a Dell PC/laptop doesn’t turn on, it’s often due to faults in the power supply, BIOS/hardware components, video units, and hard drives.
This article will explain how these factors prevent your Dell laptop from turning on. At the end of this article, we shall also explain how to troubleshoot these problems.
- Why Won’t My Dell Laptop Turn On?
- How To Fix a Dell PC That Won’t Turn On
Why Won’t My Dell Laptop Turn On?
Your peripheral devices, BIOS, hard drives, and faults in the video display units can prevent your computer from turning on. There are symptoms used in diagnosing them and their respective solutions to fix them.
Here are some of the signs you should check for.
Diagnosis #1: No Power
If the laptop receives zero power supply due to a damaged laptop battery or any hardware component, it will fail to turn on.
Here is how to recognize power issues in a Dell laptop.
- The computer doesn’t turn on after pressing the power button.
- All the LED lights are completely turned off.
- You can’t hear any sound of the fan operating.
- The computer display is blank.
Diagnosis #2: Failed POST (Power On Self Test)
The POST inspects the hardware component of your PC just the moment you turn it on and before it boots.
If there is a hardware or BIOS (Basic Input/Output System) defect, it won’t proceed with booting.
Symptoms of a failed POST in Dell laptops include the following.
- Your computer turns on, and the fans work, but the booting stops at the Dell logo.
- The LED lights are on and off in a blinking pattern.
- Your caps lock, scroll lock, or num lock key are unresponsive.
Diagnosis #3: Damaged Video Capability
Screen damages, VGA, and faulty hardware components for graphics can stop your screen from displaying even when it is switched on.
Symptoms of faulty video display units in Dell laptops include the following.
- Horizontal or vertical lines appear on the screen and may have colorful patterns.
- The screen is entirely blank.
- The image produced on the screen is very dim, blurry, or distorted.
Diagnosis #4: Screen Error Messages
Error messages are displayed on a booting screen, such as “No Boot Device”, “No Bootable Device”, or “Boot Device Not Found”. They usually occur because of a damaged or corrupt hard drive.
Here are the symptoms of failed booting in Dell laptops.
- The computer and the LED turn on, and the fans work.
- The screen appears blank/black, and a blinking cursor appears in the upper left corner of the screen.
- You can see hard drive error messages such as “No Bootable Device”, “No Boot Device”, or “Boot Device Not Found”.
- Booting stops at the Windows logo screen.
How To Fix a Dell PC That Won’t Turn On
How you fix a Dell PC depends on why it fails to turn on. However, one way that stands out regardless of why a laptop fails to turn on is the hard reset.
Here are the ways to fix a Dell laptop.
Fix #1: Inspect for Power Connection Problems
The first step you should take when your laptop or PC fails to turn on is inspecting for any power supply hindrance. It would help if you studied the following.
- Check that the power cable connected to your laptop isn’t faulty.
- Check that it’s the correct voltage that is supplied to your computer.
- Check that your laptop battery isn’t dead.
Fix #2: Perform a Hard Reset
After inspecting any problem that may occur due to the power supply, you should perform a hard reset.
Most times, the residual power in your laptop makes your PC only boot to the Windows operating system. A hard reset can fix this problem and take away residual capacity.
To perform a hard reset, you should follow these steps.
- Switch off your computer.
- Unplug the AC adapter from the power outlet or the charging cable from your PC.
- If the laptop battery is removable, you should remove it from your PC.
- Wait for about 15 minutes, and switch on your PC back.
It would help if you used hard reset for all diagnoses in this article.
Fix #3: Use Forced ePSA (Enhanced Pre-Boot System Assessment)
If you have tried a fundamental hard reset to no avail, you can try forced ePSA. Forced ePSA involves removing all connected devices to your laptop and hard resetting them.
Popular connected devices include drivers, printers, webcams, scanners, keyboards (if detachable), and media cards.
Here is how to perform a forced ePSA on your Dell PC.
- Disconnect all connected and attached devices to your PC.
- Press and hold your laptop power button for 15 to 20 seconds. This will drain the residual power.
- Reconnect your AC adapter and power cable. Also, connect your laptop battery.
Fix #4: Run a Hardware Diagnostic Test
A hardware diagnostic test examines the hardware components of your PC. It could be possible that some of your laptop components, such as the keyboard, speaker, and bike, should be faulty.
A fault from any of these components could result in a reverse circuit causing your PC to reboot repeatedly.
The computer usually performs its hardware diagnostic test itself. However, you can carry out the hardware diagnostic test yourself.
Apart from power problems, a slight issue in any hardware component can prevent a laptop or PC from turning on. These problems can arise from the BIOS (Basic Input/Output System), hard drives, or the screen display unit. This article has listed the many reasons a Dell laptop fails to turn on and the steps you can take to solve it.