Fujitsu amilo li 2727....I cannot turn on wifi

You can try this solution:

Copy and paste the below text in to a text editor, save it and give it any filename with the extension .vbs, eg wirelessstart.vbs and copy a shortcut to your startup folder:

Set WshShell = WScript.CreateObject("WScript.Shell")
Set oExec = WshShell.Exec("C:\Program Files\Launch Manager\WisWBSet.exe")
do while WshShell.AppActivate("Wireless Status Option")=False
WScript.Sleep 100
loop
WScript.Sleep 100
It would be better that you restart the system after doing that.