Hi everyone

I have a problem with my laptop where it will not turn on (not exactly, it does turn on but the screen is just pitch black and I can still hear the sounds the CPU makes) once shut down. The only way to turn it on is to unplug and wait until the battery depletes completely and then plug in again. However, the problem will happens again in a circle when I shut the computer down or when it goes to sleep. It is the first time I encounter such a weird problem, any help would be appreciated.

It is a 2 year old Sony by the way. I do have another laptop but I love this one very much.

Thanks