Table of contents(14)+
- 01The 30-Second Test: Is It the Screen or the Computer?
- 02Fix 1: Check Cables and Power Connections First
- 03Fix 2: Adjust Sleep, Power, and Display Settings
- 04Fix 3: Update or Roll Back Your Graphics Driver
- 05Fix 4: Rule Out Overheating and Background Load
- 06Fix 5: Check the TV Side, Too, If You're Using One as a Monitor
- 07Quick Reference: Match Your Symptom to a Fix
- 08Frequently Asked Questions
- 09Why does my computer screen go black for a few seconds and come back?
- 10Why does my laptop screen go black but the computer is still running?
- 11Can a bad graphics card cause the screen to go black?
- 12Why does my computer screen go black when I'm gaming?
- 13Is a black screen a sign my monitor is dying?
- 14Related Guides
In practice, a black screen rarely means a dead computer. Most cases trace back to a handful of usual suspects. A loose cable, an aggressive power-saving setting, a stuck graphics driver, or heat buildup. Desktops, laptops, and even TVs used as monitors show the same blank screen for different reasons underneath. The fix depends on which one applies to your setup.
The 30-Second Test: Is It the Screen or the Computer?
Before trying any fix, figure out whether the problem is the display or the computer itself. This takes less than a minute.
- Look for a power light on the monitor or laptop. If it's off, the issue may be power, not just a black screen.
- Press a key or move the mouse. If the keyboard backlight or caps lock light still responds, the computer is running and only the display failed.
- Listen for fan or drive noise. Running fans with a black screen usually point to a display or cable problem, not a crash.
- If you have another monitor or cable, swap it in. A black screen that follows the cable to a new display points to the cable or port, not the screen itself.
If what's going black is a television, not a monitor plugged into a computer, the fixes are different. Our Hisense TV black screen guide covers signal loss, eco settings, and HDMI handshake problems specific to TVs.
Fix 1: Check Cables and Power Connections First
Start here because it's free and takes two minutes. A loose or damaged video cable is the single most common reason a screen goes black while the computer keeps running.
- Unplug the video cable at both ends and reseat it firmly.
- Try a different cable if you have one. HDMI and DisplayPort cables fail more often than people expect.
- Check the port itself. A bent pin or loose port can cause an intermittent black screen that comes and goes.
- If you use a docking station, connect the cable directly to the laptop instead, to rule out the dock.
When this won't work: if the screen stays black on a fresh cable and a different port, move to the next fix.
Fix 2: Adjust Sleep, Power, and Display Settings
Power-saving settings are built to turn your screen off, and sometimes they trigger sooner than you expect.
- Check your screen's sleep or power-saving timer and extend it, to see if the black screen matches that interval.
- If you run two monitors, check whether the computer switched to sending output only to the screen that's gone black, while the other one still works.
- On a laptop, check whether closing the lid or switching power sources changes the behavior. Some laptops use a separate sleep timer for each.
Windows also publishes its own general troubleshooting guidance, if you want to check for a system-level fix: support.microsoft.com/windows.
When this won't work: if the screen goes black at random times with no pattern tied to idle time, sleep settings probably aren't the cause.
Fix 3: Update or Roll Back Your Graphics Driver
A graphics driver that crashes or conflicts with an app can blank the screen for a second, or drop it completely.
- Check your graphics card manufacturer's own update tool for a newer driver version.
- If the black screen started right after a driver or system update, try rolling back to the previous driver instead of updating further.
- Restart the computer after any driver change. A driver crash can leave the display in a bad state until reboot.
When this won't work: if the screen was black before any driver was ever installed, or on a brand-new, unused machine, the driver is unlikely to be the cause.
Fix 4: Rule Out Overheating and Background Load
Heat is a common cause when the black screen only happens after the computer has run for a while, not right at startup.
- Listen for fans running louder than normal right before the screen goes black. That's a sign of thermal throttling.
- Open the case or laptop vents and check they aren't blocked by dust or furniture.
- Close background apps that lean on the graphics card, like video editors or games, and see if the black screen stops.
When this won't work: if the black screen happens immediately at power-on, before the computer has had time to heat up, overheating probably isn't the cause.
Fix 5: Check the TV Side, Too, If You're Using One as a Monitor
Plenty of people use a smart TV as a second monitor or a main display for a desktop. If that's your setup, the black screen might come from the TV, not the computer.
- Smart TVs often run their own eco or sleep timer, separate from your computer's power settings.
- An HDMI input can lose its signal and go black if the TV switches inputs or re-scans sources on its own.
- Our guide on why a Hisense TV keeps turning off walks through these TV-side settings in more detail.
If you don't have the TV's remote handy to check those settings, HiRemote turns an iPhone into a remote for Hisense TVs. It pairs over Wi-Fi, so you can switch inputs and check settings without the original remote. Get HiRemote on the App Store.
When this won't work: if your display is a dedicated computer monitor, not a TV, this fix doesn't apply. Go back to Fixes 1 through 4.
Quick Reference: Match Your Symptom to a Fix
| Symptom | Likely Cause | Start Here |
|---|---|---|
| Power light on, fans running, screen black | Cable or port issue | Fix 1 |
| Screen blacks out after sitting idle | Sleep or power settings | Fix 2 |
| Screen flickers black, especially in games | Graphics driver | Fix 3 |
| Black screen only after running a while | Overheating | Fix 4 |
| Display is a smart TV used as a monitor | TV-side setting | Fix 5 |
Frequently Asked Questions
Why does my computer screen go black for a few seconds and come back?
A screen that blacks out briefly and recovers usually points to a graphics driver resetting itself, or a loose cable connection, not a dead monitor. This often happens under heavy graphics load, like gaming or video editing, when the driver crashes and restarts on its own. Check for a driver update first. If it keeps happening with a fresh cable and an updated driver, the graphics card itself may be failing.
Why does my laptop screen go black but the computer is still running?
This means the display has failed or gone to sleep, while the computer underneath keeps working. Check if the keyboard backlight or caps lock light still responds. If it does, try pressing a key or plugging in an external monitor to confirm the computer is active. The likely cause is a display driver crash, a sleep setting, or a failing screen panel.
Can a bad graphics card cause the screen to go black?
Yes, a failing graphics card is one possible cause of a black screen, especially under load during games or video playback. Other signs include visual glitches before the screen goes dark, or the computer restarting on its own. Try a different cable and port first, since those fail more often than the card itself.
Why does my computer screen go black when I'm gaming?
A black screen during gaming usually points to overheating, a crashing graphics driver, or a power supply that can't keep up with the graphics card under load. Check your fan noise and case airflow first, then update your graphics driver. If the screen blacks out only in the most demanding games, heat or power is the more likely cause.
Is a black screen a sign my monitor is dying?
A black screen can mean a dying monitor, but it's more often a cable, power setting, or driver issue that looks identical from the outside. Test the monitor with a different cable and a different device, like a laptop, before assuming it's the monitor. If the screen stays black across every cable and device you try, the monitor is the more likely cause.
