Typically when you boot Windows 8 you will land either on the Lock (or Login) Screen or the Start Screen; depending on how you have Windows 8 configured. To get to the desktop, you have to click on the Desktop tile on the Windows 8 Start Screen. This change has really thrown a lot of folks off of their game.
There are couple of ways to fix this so that you will land on your desktop, instead of landing on the Start Screen. One option is to download (and buy) Start8 by Stardock. The advantages of this option is that there is a configuration setting in Start8 that will allow you to boot to the desktop; PLUS, Start8 creates a Start Menu (which is a missing component in Windows 8). So this option is really a win-win option, all the way around. There are many other third party options out there, but I lay my trust in Stardock’s reputation.
The other option that I came across is by WinAero. This option is a more techie type option that requires a little work on your part; however, this option does not require you to install any third party software. It modifies system policy and allows to Explorer to read the registry key which controls Metro behavior. If you think you may be interested in this option, [click here]. WinAero also has some other Windows 8 utilities that you may be interested in, as well.
In summary, I am thinking that Microsoft will eventually get this right by giving us an option to restore the Start menu and by giving us an option to boot to the desktop. Microsoft reminds me of many of the smart (intelligent) people I know. They are smart, but they lack common sense.
GEEK BONUS AREA