Check your .htaccess file. Anyway, this is most probably happened because of the corrupted installation. Reinstall it will make way better :)
I noticed that the Xampp link is updated.
Anyway, you all should try Wamp instead! :)
http://www.wampserver.com/en/
I'd say no support can match host1plus ;) they're very friendly... I chat with them for 2 hours at late night... lol!
edit: I paid for USD 24 monthly with portspeed upgrade, processor upgrade (3 cores). I'm running 3 games server at once (1 games per core) lol.. I think it is reasonable..