Some common of computer issue you find in your PC.

you look some time your computer is going too slow.If it happen simply you can delete your temp. files and cookies. If you RAM is low size if your desktop menus are full of your front screen, You delete or make a folder and put the local drive. If you default drive is Low space you can delete data from default drive or you need more space in default drive. Due to some inappropriate S/w is install your PC , You should remove this type of s/w.