Has your computer suffered a power surge, won’t resume from sleep mode, or just stopped turning on one day? There can be many causes for a no power issue such as bad charger, battery, motherboard, power jack, power supply, and others. Most issues can be repaired efficiently and a diagnostic will reveal the best repair option to get you back up and running.
Some quick items to check are trying a different power outlet / remove the UPS (Uninterruptible Power Supply) if in use, try a different charger, remove and reinstall the battery (if user replaceable on your laptop).
If the computer is an older model and important files are needed from it, we can focus on saving your data first and find the best way forward.