Shutting down your PC at the end of the day is so twentieth century, what you probably should be doing is putting it into sleep mode; you’ll avoid that interminable wait for your system to boot up, without destroying the earth or your bank account by causing a dramatic up-surge in energy usage, shutdown take 16 second and boot- up takes 66, shutting down is pretty fast, but booting up is painfully slow, I’m referring to true boot-up time from when press the power button to when at a usable desktop, clicking away and getting response.
Any start-up includes a couple things like anti-virus software loading at boot, in contrast, it take 18 seconds to put PC on sleep mode and a more 2 seconds to wake it, just 2 seconds to start a truly usable desktop waking from sleep mode, shutting down takes a couple of second longer, what about power, many BIOS system now support the S3 ACPI ( Advanced configuration and Power Interface) mode, the S3 mode powers them down, high end system, excluding the monitor uses some 120 to 130 watts just humming quietly and 1 watt when powered off, most computer draw a very small amount of power even when off, so that they can do things like turn on when you press the power button, in sleep mode, system draws a modest 5 watts of electricity, which dumps the contents of your PC’s RAM to the hard disk and then powers off your PC, although this model lets you resume the right where you left off, the large amount of RAM in today’s system make it a pretty slow option. You should also make sure windows and BIOS are up to date, sleep mode had a reputation for finickiest in the past, but now motherboard manufactures and Microsoft have worked out most of the options kinks