No beep sound and No signal

I tried to start my k450e, but there was no beep sound and no signal on my monitor. How can I fix this? I don't know what is the problem.... and should I visit the local warranty service providers??

Welcome to the Lenovo Community !
I am assuming that the computer is showing some signs of life such as the fan spinning or lights illuminated.  If there isn't then check your power source.  Try plugging the computer in a different wall socket.
If the problem still continues and you are not comfortable working inside your computer or your warranty is still active then I would recommend you contact Lenovo Support for additional assistance in getting your computer repaired or visit a local area Authorized Lenovo Repair Center.
Lenovo Support - USA
1-877-453-6686
24 hours a day 7 days / week
Authorized Repair Center Locator.  Be sure enter in your City and check the box for Warranty Service Provider in order to get a listing of repair facilities.  Just use this link.........
http://bplocator.lenovo.com/

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