Dell Laptop With No Display After Changing Parts

I've been tinkering with an old Dell laptop an Inspiron N7110. I replaced the motherboard and I was getting the 7 beeps issue, and no bootup. Unable to resolve it with some of the more common techniques, I replaced the CPU. It is powering up, and booting up now, but there is no display. I don't think I forgot to connect anything, but I may have to take a look. Any idea what area that is in? Assuming I did connect everything, any ideas how to troubleshoot?

 

THIS is an old Inspiron.

No display is hardware. Connect an external monitor, and reply.

 

I connected an external monitor, and there is still no display. I will look through the Dell pages.

 

Look at your "Fn" or Function keys. Usually in tandem with the numerical keys. There may be a key combo to enable the external display.

 

You can try shut down,remove battery and charger, hold down start button for around half a minute, then plug in charger, and try the start button. without battery in it.
If you are lucky , it could solve it.
You might have to repeat this , in an attempt t clear the problem. This trick has worked for me in the past