I have bought a new inspiron 15 3521 & after going through the community i think i have made a mistake of buying this particular model. Still trying to resolve my Bluetooth problem. I have installed dual booting Windows 7 & 8 also
Has Bluetooth ever worked? If yes when did it stop?
Have you re-installed the original OS at any point?
When you installed the other OS did you install correct drivers in correct order?
Please provide screenshot of Device Manager showing any errors in BOTH OS's
I presume you've done the obvious and try to re-install Bluetooth drivers for both OS's?
No it has not worked & my system came with ubuntu, i downloaded drivers frm support for both win 7 & win 8, even tried R226746.exe but error saying activate bluetooth using wireless switch, also tried updating software unable to do so, uninstalled & reinstalled but did not work, all screen shot given & even updated bios. Screen shot 4 win 8 will post later. Bye & Regards.
Sorry I'm still unable to see your screenshots.
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Download and install this for Windows 7
and for Windows 8