Windows 7 cleans up the system garbage

Windows 7 junk files are stored in two main places: one is in the folder, one is stored in the registry.
First, the garbage in the folder is: (assuming Windows is installed in the C drive, such as replacing letters in other partitions)
1, & ldquo; garbage in my document, placed in C: WindowsRecent In the folder;
2, install the program, the temporary file generated when editing the file is placed in the c:windowstemp folder;
3, the thing thrown into the trash when deleting the file is in the C:RECYCLED folder (hidden folder);
4, when you browse the website, Windows will keep the pages you have seen in the C:WINDOWSHistory and C:WindowsTemporary Internet Files folders;
5, once logged in Information, Microsoft will also retain cookies, which are stored in C: WINDOWSCookies.
Second, the garbage in the registry:
In the Windows system, the registry is a complex information database that records the settings and locations of 32-bit drivers. When the operating system needs to access a hardware device, it uses the driver, and even the device is a BIOS-backed device. No BIOS support device must be installed when the driver is required. This driver is independent of the operating system, but the operating system needs to know where to find them, file name, version number, other settings and information, no registry to device records, they are Cannot be used.
Long-term use of Windows system, the registry is frequently read, always leaving a variety of residual information, such as missing shared DLL files, unused file extensions, type libraries, fonts, applications Program paths, help files, and obsolete software are all in the registry! But we better not to delete these residual information manually, so as to avoid system problems. It is recommended to use a professional cleaning tool to scan and clean.