Contact a computer engineer that knows what is this about, has i dont know a shi*t what the problem can be.
However, it says it's windows 6.1.
Windows 6.1 build 7229 = Windows 7. Nothing wrong with that.
How to figure out where your problem is:
1. Host etc Gesior ACC, enter a webrowser and enter
http://127.0.0.1 or localhost.
If site appears, nothing is wrong with the xampp application.
2a: Enter CMD - write IPconfig, write down your local IP adress.
2b: Enter another computer in the same house (which usually share the same network).
2c: Enter a web browser, write in the local IP address that you wrote down.
If site appears, nothing seem to be wrong with your firewall.
If you get stuck at this point:
// You might want to try to disable your firewall and redo this step to verify the troubleshooting.
// If you still get problems, you know it is not the firewall, or the router. But your computer.
3a: Enter website "www.whatismyip.com", and write down your IP.
3b: On your tibia server, enter config.lua, look after this:
Lua:
-- Connection config
worldId = 0
ip = "127.0.0.1"
bindOnlyConfiguredIpAddress = false
loginPort = 7171
gamePort = 7172
3c: replace 127.0.0.1 with the IP you got from
www.whatismyip.org (In my case it is 85.167.57.79, however you have a special IP that leads directly to your home!)
3d: Ask your friend to try to enter your website using
http://YOURIPHERE. And see if he gets any results.
Note: Replace 'YOURIPHERE' with your IP.
If site appears, nothing seem to be wrong with your router porting, IP or firewall.
So if you manage to pass all my steps, even 3d step, you might consider fixing your domain. Like yourserver.no-ip.org or something.
If you did not manage to pass all my steps, this troubleshooting at least helped you with tracking more detailed where your problem is.