If this is a so-called "refurbished laptop", whoever did this, did a lousy job. The job should have included full fan cleanup and thermal paste removal, for which you need to take at least half the laptop apart. Either send it back for a refund or replacement, or (if you have money to spare) send i...

Thanks for your replies...

Does any of this involve opening/disassembling the computer?

If I have no experience opening it, would it be better to send it to Lenovo or something - or is it a fairly easy task?

I recently bought on Amazon a refurbished x230 and have been happy with pretty much every aspect of it, its speed, graphics, ease of use, but once again especially its super-speed :) The only aspect that bugs me is the noise that increases each time I open a new program, and then decreases if it thi...