I have a similar issue, page renders blank. file:///C:/xampp/htdocs/hello.php will not render and so I changed the Apache ports back to 80 from 8080 which is the only way i could get it to work before. Now I get this when I try to connect to the Apache server.
1:51:15 PM [Apache] Error: Apache shutdown unexpectedly.
1:51:15 PM [Apache] This may be due to a blocked port, missing dependencies,
1:51:15 PM [Apache] improper privileges, a crash, or a shutdown by another method.
1:51:15 PM [Apache] Press the Logs button to view error logs and check
1:51:15 PM [Apache] the Windows Event Viewer for more clues
1:51:15 PM [Apache] If you need more help, copy and post this
1:51:15 PM [Apache] entire log window on the forums
Could the page not appearing be something to do with the ports used?