dell bios freezes

Hey guys,

I have a dell desktop that's about 3 years old, everytime you turn it on it freezes in the middle of the bios. If you unplug it and plug it back in it will work fine.

Does anyone know what might be happening? I don't think it's a heat problem since it happens after sitting all night. It is located in a dusty office so that might be something.
 
Maybe a bios update is required. Or some components are starting to fail.. take a look inside the pc and see if there's anything strange happening..
 
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