1, although the computer has been popularized, but the computer system is not "universal", believe that most users are not installed in the original Microsoft system, it is likely that the computer system is bound to some software or services caused by the software and services, although can be unloaded, but still to the computer operation caused a certain impact, Therefore, the small part of the proposal to install the system is also best to install the pure version.
2, the second reason is that after reloading the Win7 system, it is possible because the system Setup error caused the computer to run slowly. In particular, the computer's virtual memory settings, Win7 users in the reload system, it is best to first look at the virtual memory for how many, operating methods to enter the computer-Properties-Advanced system settings-Performance Settings-Advanced tab-Virtual memory-change-Select the drive to set C disk, Then set to customize the selection size as needed. After Setup, the system will automatically adjust the virtual memory requirements according to the current computer situation.
3, there is another reason is that the computer itself has out, at this time you installed the latest Win7 system, bringing a large number of updates, will make your computer can not withstand, so in the reload system must check their own computer to meet the needs of the Win7 system, If not, forced installation will make the computer become more card.