I have a Raspberry Pi 3. Until yesterday night it was working perfectly then before I slept I switched off both my monitor and my Raspberry Pi 3. Today when I woke up and turned them both on I notice that the monitor was not showing anything and my Raspberry Pi 3 was showing a red light but not the green light as it showed before. I thought that it was a monitor problem so I tried another monitor with a different HDMI cable but still no booting started. My OS is NOOBS.
The problem is that since I have switched on the Raspberry Pi 3 I notice that no green light shows up along with the red light. Only one red light shows up. this means that I am getting power but the Raspberry Pi is not booting. It has only been 3 months since I bought my Raspberry Pi and I don't want to take it to a repairing shop. Please tell me what should I do so that the green light comes back on my Raspberry Pi and everything turns back to normal as it was until yesterday and I can start working on my Raspberry Pi 3 again.