Laptop Black Screen on Startup? How to Find the Cause and Fix It
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A black screen when you turn on a laptop has three very different causes: the display isn't showing an image (backlight, cable or panel), Windows is running but not drawing the desktop (driver or update problem), or the laptop isn't really booting (RAM, motherboard or power). The two-minute tests below tell you which one you have, so you don't waste time on the wrong fix.
Step 1: Find out what kind of black screen it is
| What you see or hear | What it means | Go to |
|---|---|---|
| Brand logo appears, then black (maybe with a mouse cursor) | Hardware OK; Windows or graphics driver problem | Step 3 |
| Very faint image visible when you shine a torch on the screen | Backlight or screen cable has failed | Step 4 |
| Image appears on an external monitor but not the laptop screen | Laptop screen, cable or backlight | Step 4 |
| Power light on, fans spin, no logo, nothing on an external monitor either | Not booting: RAM, BIOS or motherboard | Step 5 |
| Caps Lock or power light blinks in a pattern, or beeps | Hardware error code | Step 5 |
| No lights, no fan, nothing | No power: charger, battery or board | Step 2 |
Step 2: Quick fixes to try first
- Wake the display: press Win + Ctrl + Shift + B. Windows restarts the graphics driver (you'll hear a beep and the screen flickers). This alone fixes many black screens.
- Check brightness: press the brightness-up key (often Fn + F-key) a few times.
- Switch display mode: press Win + P, then Enter a couple of times. The laptop may be sending the picture to a projector or a monitor that isn't there.
- Unplug everything: remove USB drives, docks, HDMI cables and SD cards, then restart.
- Hard reset: shut down by holding the power button 10 seconds, unplug the charger (and remove the battery if it's removable), hold the power button for 15–30 seconds, then reconnect and start. This clears leftover charge that can stop a laptop from starting properly.
- Charge it: leave it on the charger for 30 minutes in case the battery was completely flat. If there's still no sign of life, check the charger with our guide to laptop battery not charging.
Step 3: Fix a Windows black screen (logo appears, then black)
Black screen with a mouse cursor
Press Ctrl + Shift + Esc to open Task Manager. Choose Run new task, type explorer.exe and press Enter. If the desktop appears, restart the PC, then install pending updates and graphics drivers.
Boot into Safe Mode
Force the laptop off as it starts, twice in a row, to open the Windows Recovery Environment. Then go to Troubleshoot → Advanced options → Startup Settings → Restart → 4. In Safe Mode:
- Open Device Manager → Display adapters → right-click your graphics card → Roll back driver (or Uninstall device, then restart).
- If the black screen started after an update, go back to Recovery and use Uninstall Updates. See also our guide to Windows update problems.
- Turn off Fast Startup: Control Panel → Power Options → Choose what the power buttons do → untick Turn on fast startup. It can cause black screens with some graphics drivers.
Repair or restore Windows
From the recovery menu, try Startup Repair, then System Restore to a point before the problem started.
Step 4: Test the laptop screen itself
The torch test
Turn the laptop on in a dim room and shine a phone torch at the screen at an angle. If you can faintly see the Windows logo or icons, the screen is working but the backlight isn't. That's usually a failed backlight, a damaged display cable (common if it flickers when you move the lid) or, on older laptops, the backlight circuit.
Connect an external monitor or TV
Use HDMI or USB-C and press Win + P → Duplicate (or the Fn display-switch key). If the external screen works:
- Your files and Windows are fine; back up now.
- The fault is the laptop panel, its cable or the backlight, which is a common and repairable fault.
- Until it's repaired, you can keep using the laptop with an external monitor.
If the external monitor shows "No signal" too, see Step 5 or our guide to HDMI not working.
Step 5: When the laptop doesn't boot (no logo anywhere)
Read the error code
Many laptops report hardware faults with a pattern of blinking lights or beeps. Count them and look up the code on the maker's support site:
- HP: Caps Lock / Num Lock LED blinks (e.g. long and short blinks) indicate memory, BIOS or graphics errors.
- Dell: the power or battery LED blinks amber and white in a pattern; the code identifies the failed part.
- Lenovo and others: beep codes or LED patterns listed in the user guide.
Reseat the RAM
If your laptop has a removable memory cover, shut down, unplug, disconnect the battery inside if possible, then remove and firmly reinsert the RAM modules. If there are two, try each one alone. Faulty or loose RAM is a classic cause of "fans on, black screen". Many thin laptops have soldered RAM, in which case skip this step.
Recover the BIOS
A failed BIOS update can leave a laptop with a black screen. HP laptops can often recover it: with the laptop off and on the charger, hold Windows + B, press the power button, and keep holding for a few seconds. Dell and Lenovo have their own BIOS recovery methods in their support documents.
Reset the CMOS / real-time clock
Some laptops have a CMOS or RTC reset option (a pinhole button or holding a key combination while powering on). It clears BIOS settings that can stop the laptop from showing an image.
Step 6: When to get it repaired
| Diagnosis | Typical repair |
|---|---|
| Torch test shows an image | Display cable or backlight repair, or screen replacement |
| External monitor works, laptop screen doesn't | Screen or display cable replacement |
| Blink/beep code for memory or graphics | RAM replacement, or board repair for soldered parts |
| No power at all with a working charger | Motherboard power circuit repair |
If the laptop is under warranty, contact the manufacturer before opening it. Not sure whether the board is dead? See how to tell if a motherboard is dead.
MacBook black screen
MacBooks have their own steps (Display brightness, SMC/NVRAM resets on Intel models, and macOS Recovery). See our guide to a MacBook Pro black, unresponsive screen.
FAQ
Why does my laptop turn on but the screen stays black?
Common causes are a crashed graphics driver, a display set to an external output, a failed backlight or display cable, loose RAM, or a failed BIOS update. The tests in Step 1 narrow it down.
How do I fix a black screen with only a cursor?
Open Task Manager with Ctrl + Shift + Esc and run explorer.exe. If it keeps happening, roll back the graphics driver or the latest update in Safe Mode.
What is the Windows shortcut for a black screen?
Win + Ctrl + Shift + B restarts the graphics driver without closing your apps.
Can a black laptop screen be fixed without replacing it?
Often yes. Driver, Windows and RAM problems cost nothing to fix, and a loose display cable is cheaper than a new screen.