Lenovo laptops now can reinstall bundled crapware and even if you load a retail copy of Windows

LENOVO LAPTOPS now can easily reinstall bundled crapware and even if you load a retail copy of windows behind that what was the problem?

problem: Reformat the hard drive and install a retail copy of the operating system. While the number of people who take advantage of this option is small compared with the millions who buy laptops, that tiny loss of revenue must have significantly irked Lenovo. The company developed and deployed a method of forcing its laptops to download bundled adware and applications.

Both Windows 7 and Windows 8 laptops were targeted, but the functionality was implemented in two different ways. In Windows 7, the system checked to see if the autochk.exe file was provided by Lenovo or Microsoft. If it detected the Microsoft default file, it copied it to a different location and replaced it with an autochk.exe from Lenovo. It also writes LenovoUpdate.exe and LenovoCheck.exe to the System32 directory. All of this occurs while your new installation of Windows is booting for the first time, which means the commands and files are stored within the system BIOS. In Windows 8, the system instead copies a Microsoft file, wpbbin.exe to System32, and uses it to execute code while the BIOS is booting up. Thanks to forum readers on Ars Technica for figuring this one out.