When turning on computer it tries to start and then just stops?

If your computer tries to start but then stops, it could be due to several issues. Common causes include hardware problems like a failing power supply, loose connections, or a malfunctioning RAM or motherboard. You could also be facing software issues, such as corrupted operating system files. Try reseating the RAM and checking all connections, and if the problem persists, you might need to consult a technician for a thorough diagnosis.