Can't surf from PC when using Android as hotspot
If you are using the built in Wifi Tethering in Settings, then Android might have automatically misconfigured the iproutes. 

You can try clearing the data on the tethering app and settings to refresh the configuration. Open Settings -> Applications -> click Settings -> Clear Data. 

Same procedure for the tethering app, Open Settings -> Applications -> click "&gt;your tethering app here&lt; -> Clear Data

and to add, I'm also a Globe/Sun subscriber :D