Answer to "WI-FI not detecting any networks"maybe the gurus here on ifixit can help ya out, cuz there is a soldering solution. But i will let the gurus talk.
Answer to "What should I do if I got warned Error 23 from itunes?"For what my experience indicates is a hardware problem, usually logic board went bad. try with other logic board if you can get one from a friend's iPhone.
Answer to "reboots all the time does not pass the apple"Trey i have the same problem as dk7250 i tried the suggestions but didnt work out. could you try explaining how to do the reset pin procedure please. i am a techie. Thankz