default browser open automatically with bing homepage when connecting Broadband connection !

udit sharma

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Aug 21, 2011
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I have windows = 8.1 enterprise
wired broadband connection ( a wired modem connected with ethernet cable to the PC)
Gigabyte ga-h87m-d3h mobo
intel i5-4570 cpu
problem = since last few days I'm facing a irritating problem. whenever I manually connect to broadband connection, with the connection processing (while finishing), my default browser open automatically. wheather it is IE or chrome but with the same 'Bing Page'.
I try to get rid of that by doing many remedies - installing windows again, scanning with various antiviruses, updating bios and other .... but no effect!! why this is occuring and is there any virus or something else is happening?