H77n-wifi not booting and no display output

[Waspsoton]

I am in need of some help.

Yesterday I changed my cpu cooler from the stock Intel one to the noctua  NH-l9x65 and since then I am getting no display out. The fan turns on and will stay on u less I turn it off. But I get no display output. I have a graphics card  installed so I tired wiping my bios setting and trying the onboard still no luck. I have strip it all down and rebuilt it, I get no beeps but I think that is because there isn't an internal speaker ( I do have one but not sure where to put it).  So from the tests I have done it's either CPU or motherboard.

Any help on fixing this would be great as I love this little board and don't really want to replace it before I move home but I need it up and running as its my plex server.

[shadowsports]

Greetings,
Have you tried with the old CPU fan?  Does it work again?  We have seen problems when these types of coolers are installed incorrectly.  Usually by misalignment or over-tightening (back plate).  Other possibility my include not connecting the power connector to the CPU_FAN header. Or using the L.N.A. patch (1800RPM) which may not work with an older Z77 board.