Currently using XP

Yup, under same router in my house.
Able to scan for my PC.

Login Failure
This may caused by:
-WiFi is off  (able to scan my PC, no issue)
-SMB server is out of network scope
-The IP is invalid (IP is valid, as it was detected by scan)
-Block by the firewall (i off the windows firewall and kaspersky internet securty)
-SMB service is off
from the above, SMB i got no idea
but i google SMB
SMB is by default for win XP 
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i fixed it already
my own silly mistakes.......

ES File Explorer + Moboplayer
Streaming 1.14GB rmvb file on S2 ....

smooth + sound