Restoring your system with a backup is extremely efficient and wise, because then you no longer have to "install a brand new system + install drivers + optimize/setup system + install all the common software". Otherwise, the whole process is extremely time-consuming, boring, and annoying. In fact, I haven't reinstalled my system in years, and have always used a backup of the system at its best state. This way, whenever the system appears all kinds of problems that are difficult to deal with, I just directly restore the system to its original best state.

As one of the most important and effective OS maintaining tools, Windows PE had become necessary for a long time. And in many cases, it is the key to solve troublesome system boot failures. While as a matter of fact, it is hard to find a high-quality WinPE image file on the Internet (so as to burn it into a USB/DVD media for use). As a consequence, a lot of advanced computer users chose to build their own PEs.