Help [HELP] WiFi Hotspot Problem

[mastermind1024]

I am facing a strange problem.I am able to setup n connect to wifi hotspot.it also shows Internet Connectivity but soon after few seconds I lost internet connectivity.Connection is good but no internet connectivity.It shows "Limited Access" and Network Diagnostic is not able to detect any problem except 'there is some problem in router'...but internet is good in phone even when hotspot is active.wifi hotspot is like this from beginning while usb tethering works fine,no issues..any help would be appreciated.
n btw I am using Win7 64 bit if at all it matters.

 

[ninadchaudhari]

Happens even with A70 or only with A75 ?

also, tried deleting the wifi network history (of the A75 that is saved earlier ? )
though just trying to hit around the bush ...

 

[kumar abhishek]

In jet3 hotspot doesn't work can u fix it

 

[mastermind1024]

Didn't happen for A70...problem with A75 only...n yes,already tried deleting old networks n all but still same problem.internet connectivity for few seconds n then gone...
Network diagnostics detail says "wifi access point may not be compatible with power-saving mode, try to set power-saving mode medium or off".So will try with default build.prop now to see if that makes any difference.