Hello, everyone i have acer aspire 4520 laptop
when we start my laptop and press F2 Button and open Boot Menu when we use ( left , right buttons on keyboard and change Tab ( Information, Boot, Exit ) so it work properly.And when we change Tab ( Main , Security,) then system is totally Hang. and after 1 minute shutdown automatically.
Some times when we start my laptop so the laptop is not start and power off in 2 seconds. or system boot automatic.
Please tell me what can i do to fix this problem.