I bought the system Acer and tried to install Windows 7 Service Pack 1, but the installation of windows i have the following error "WindowsUpdate_C0000135 WindowsUpdate_dt000" SQMAPI.dll fault and after that I am unable to install Windows 7. Before this, I am using Windows XP on my system. I downloaded and then restart the system after it tried to install and I have this error. I have tried to solve this problem to troubleshoot Windows Update and I've also gone through some threads of the web page but does not help me. Now I do not, is there anyone to solve this problem?