If your computer does not turn on and you are seeing a black screen, there are several things you can do to try and fix the issue. Here are some steps you can take:

1. Check the power source: Make sure that your computer is properly plugged into a power source and that the outlet is working. If you're using a laptop, make sure it's charged.

2. Check the monitor: If your computer turns on but the screen stays black, make sure that the monitor is properly connected and turned on. You can also try connecting the monitor to a different computer to see if it works.

3. Check for loose connections: Sometimes the problem may be due to a loose cable or connection, so make sure that all the cables are securely plugged in.

4. Check for hardware issues: If the above steps don't work, there may be a hardware issue that is preventing your computer from turning on. You can try removing any external devices such as USB drives, printers, and other peripherals to see if that resolves the issue. If the problem persists, it may be a problem with the motherboard, CPU, or RAM, and you may need to seek professional help.

5. Try booting in safe mode: If you're able to get the computer to turn on, try booting in safe mode. This will load a minimal set of drivers and may help you identify any software-related issues.

If none of the above steps work, it may be time to take your computer to a professional for repair.
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