Hello.  I have a Lenovo Z570 on Windows 7 and itis my son's laptop. Me being foolish for not looking at a manu for this particular laptop screwed it up. All I wanted to do was TAKE the screen off due to the screen being messed up. The frame of it  as well. I saw on youtube gmhow you can turn a laptop into a desktop by taking off the monitor. So that was what I was attempting to do. I being foolish cut the wifi antenna thinking it was part of the monitor and was not gonna cut the hookup for the display. then cut it on and bad thing was i coukkd not get wifi connection and realized what I did! Then I thought maybe if I take out the wifi antenna since I have a wifi dongle. So I HOOKED it and tried to cut it back on. Omg, it WOULD not cut back on! Then, after reconnecting the antenna back and turned it on, no laptop cut on! I took the battery out since it went out a few years ago and just never bought one. So what can I do at this point?  I wanted to suprise my son about his laptop being hooked to an external monitor as a desktop and unfortunately it won't cut on!! I tried the cycke thing where you hold the power button down 15secs and that did not work. Can disconnecting a wifi antenna cause the whole pc to not cut on??? I'm so so mad at myself for this! Please someone help me. We went thru this...Here..

All THATS required for a laptop to use an external monitor is simply connecting the monitor with all power off and re-booting...Good morning and thanks so much for this. I was actually going to do that by simoly getting a usb keyboard as he already had a usb mouse hooked to the computer and have the computer closed. But I wanted to save money buying a keyboard and use the one the laptop provided. I shouldn't just tried the advanced WAY and just should have went the simpler way. Smh. I will probably just buy him another computer if this little thing messed up the motherboard if that's the problem.