Many computers - especially laptops and netbooks - are configured to reduce their performance in order to save on power consumption and lengthen battery time. However, if your laptop is plugged into the mains or you’re not worried about battery life, try adjusting its power options to enjoy a power boost.
To do this, click Start > Control Panel > Hardware and Sound > Power Options.
A window will appear titled Select a power plan, and listing several power plans. Click the down arrow next to the text Show additional plans.
Click the High performance option. This will give you the maximum speed from your computer, though your laptop battery will drain faster if you’re not plugged into the mains.