Intensive power usage is the main problem with the new type computers which can perform with very high speeds but will use high amounts of energy. Luckily there are options in windows 7 to reduce the power usage by decreasing the performance a little which mainly affect the visual display but its not a problem because it just stops the computer usage when we not use it. You can choose many settings to do this. To start in the search box type change power-saving settings and select the option. You can mainly choose from 2 plans which are balanced and power saving. Balanced is a good choice since it doesnt affect anything. Select the any plan and on the right click change plan settings to go to more choices.
Here you can select the idle time after which your computer sleeps and the time till the light on the screen lasts. These settings are not so effective so select the advanced settings option to configure better settings to save more power. Remember that this plan can also be used to improve performance by increasing power usage so low power computers can also try this.