Don’t splash out just yet! From a system update to better room lighting, a little fine-tuning could save you hundreds • Do you really need to buy a new laptop? Don’t splash out just yet! From a system update to better room lighting, a little fine-tuning could save you hundreds Do you really need to buy a new laptop? The Guardian’s journalism is independent. We will earn a commission if you buy something through an affiliate link. Learn more . The Guardian’s journalism is independent. We will