computer screen goes black but computer still running

Desktop problems can be diagnosed by using a Power-On Self-Test (POST) code checker which you can buy on eBay for just a few dollars. Laptop problems are hard to diagnose, so you’ll probably need to send your computer for repair. If your computer doesn’t show the above signs of life, something is probably wrong with your computer, not your monitor. If you have wireless, you should have a light which indicates that the wireless adapter is active. If you have wired networking (ethernet), you may have lights where the cord connects to your computer-see if they start flashing. If you have a magnetic hard drive, you should hear it working to load Windows or Mac OSX. Your computer fans should turn on, making noise. Press the power button and then listen to your computer and watch its LEDs. This applies to both desktops and laptops. If your computer isn’t booting, you’ll get a black screen, so make sure your computer actually turns all the way on when you press the power button. Fix A Black Screen #2: Make Sure Your Computer Boots

This will fix many black screen problems.

Check both ends of every cord which isn’t hardwired into your monitor to make sure they’re well-connected. Most monitors have two main cords plus (maybe) some additional cords for sound. If you have a desktop computer, go through and check all the cords which connect to your monitor. But whatever your problem, here are five easy ways to try to fix it: Fix A Black Screen #1: Check Your Cords Some problems-like loose cords-are super easy to fix, but other problems-like black screens on laptops-may require an expert repair. Fixing a computer with a black screen can be easy or hard depending on what caused the problem and whether you have a desktop or a laptop.

Computer screen goes black but computer still running