Question

How i delete temporary files in windows 7?

Answer 1

Press the Windows Button + R to open the "Run" dialog box.Enter this text: %temp%Click "OK." This will open your temp folder.Press Ctrl + A to select all.Press "Delete" on your keyboard and click "Yes" to confirm.All temporary files will now be deleted.
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Answer 2

%temp%

The operating system of a computer may periodically collect all the free memory space to form contiguous block of free space This is called as %temp%

Windows and other OS like Mac and Linux stores our temporary data and by default it is saved in C:/Windows/temp.

You can also remove that temperory data with the help of Win+R and type there as a %temp% (attachment 1st).

After that, it will open your all temperory files. Now, It will be about 1 to 1.5 GB. select all files and Shift+delete.  

Windows automatically delete temperory files after having size of more than 2.4 GB.

You can see 1st, 2nd and 3rd attachment. By which you can know about temp in windows operating system.

For mac you should use command+R for opening Run. Same process is applied is every OS.