If you're comfortable working inside your laptop, you can test it yourself using a multimeter otherwise you should take it to a local laptop repair shop. If you press the power button and no lights come on and you hear no sound (not even the laptop's cooling fan), it's more likely than not that the power supply has failed. Try plugging the laptop into the wall (don't rely on the battery). There are a lot of potential hardware problems that can cause the laptop to fail to turn on properly, but if the laptop does absolutely nothing when you press the power button, even after a hard reset, it's a fair bet that the power supply has failed. But you will probably need to take your laptop to a repair shop to fix this issue. Try performing a hard reset (see the next tip) and run Dell's integrated diagnostic test (see below for that as well). Unfortunately, this is often bad news - it generally points to defective hardware inside the laptop. Usually, you'll still hear the fan come on, but nothing will appear on the display. If you try to turn on your laptop and hear a sequence of beeps or see a series of keyboard keys flashing (usually, the Scroll Lock, Caps Lock, and Num Lock), the system's self-test (commonly called the POST) has failed. You see unusual flashing lights or hear beeps No matter what's keeping your laptop from powering on, here are seven of the most common ways to troubleshoot your Dell laptop and solve the problem as quickly as possible. The problem might even be software-related. Your laptop could be suffering from a power failure, a hard drive glitch, or some other internal hardware problem. If your Dell laptop won't turn on, it might not be immediately obvious what the problem is.

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