ACER ASPIRE CORE I3 BOOTING PROBLEMS WITH WIN 7

Before you start win7  first apply these  changs in biose. 

1.Completely shut down your computer.

2.Power on the system. As soon as the first logo screen appears, immediately press Delete to enter the

BIOS.

3.Use the right arrow key to select Authentication.

4.With Secure Boot highlighted, press Enter and then the down arrow to select Disabled.

5.Use the right arrow key to select Boot Options.

6.With Launch CSM highlighted, press Enter and use the down arrow to select Always.

7.Press Enter.

8.Press the F10 key to save changes and restart the system