Removing temporary files from your system

select RUN

1. type temp and press enter , you will reach a folder named temp select all items in that folder using ctrl+a key stroke and then  press shift+del.
2. another temporary folder that must also clear,  type  %temp% and press enter you will reach a folder like "C:\DOCUME~1"  select all items in that folder using ctrl+a key stroke and then  press shift+del.