E540 won't turn on, emits single high-pitched beep

I'm not sure what this issue is.

yesterday I was using it as normal when it switched off completely without any warning.
I'm used to this happening as my laptop regularly overheats and switches off like this.
There was also a weird slight smell of burning plastic.
To be honest, all the details don’t sound very good…
Everything looks like some serious hardware problem causes that the notebook cannot be powered up.
I cannot say for sure what’s wrong here but probably the motherboard or CPU has died.
Anyway, your data on the HDD should not be affected and I guess you could get access to your whole iTunes library. You need to remove the HDD from the notebook’s HDD bay and you will need to use an external USB 2.5” HDD caddy to connect the this notebook’s HDD to another computer as an external USB HDD.
This will allow you to move and to backup the data to another good working HDD.

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