Why has my laptop Lenovo 470 started making loud beeps on starting? It boots after several minutes of beeping but on restarting again goes through the same. - Quora
When I plug the power cable into my Lenovo laptop, it slows down, the CPU speed drops. I've taken my laptop to tech support several times, but nothing. Can you help me
![Fix Beeping Sound When Plugging in Charger in Lenovo Laptop || New Video 2018 || RJ Solution || - YouTube Fix Beeping Sound When Plugging in Charger in Lenovo Laptop || New Video 2018 || RJ Solution || - YouTube](https://i.ytimg.com/vi/cicHZFl_2w8/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLAewkGuwyLVVxGoK-SdpLI9Z3zvEA)
Fix Beeping Sound When Plugging in Charger in Lenovo Laptop || New Video 2018 || RJ Solution || - YouTube
![I have a thinkpad yoga 12. It beeps twice and shows nothing on the screen no backlight. The keyboard is lit up and the FN button has a green light on it. I have a thinkpad yoga 12. It beeps twice and shows nothing on the screen no backlight. The keyboard is lit up and the FN button has a green light on it.](https://i.redd.it/xxqfj1xhjlha1.jpg)