I'm having a serious problem with my Lenovo Legion PC. It shuts down immediately when I try to turn it on, so I don't think overheating is the issue. This has become really frustrating because it started happening randomly today. Sometimes it also turns on and off multiple times right after I power it up. I can't afford a new PC at the moment, and I really need this one to work. Just to clarify, it's plugged in, but that doesn't seem to help.
2 Answers
Have you tried turning it on while it's plugged into the power? It might just be a battery issue or something with the motherboard. It’s always a good idea to check the power source first.
Actually, your overheating remark could be misleading. If your cooling system is failing, the CPU might shut down to protect itself from damage. You might want to check if your fans are working properly or if there's dust buildup.
Should I just open it up and clean the fans then?

I've tried both plugged in and unplugged, and it still shuts down.