yes, everything is updated.Have you applied all the Firmware Updates? I believe on had updated Wireless Drivers.... including Bluetooth.
uninstall marvel bt?Look in Device Manager and remove the device from there and remove all the drivers and then try to repair the device.
2/8/2013Which driver version of 'Marvell AVASTAR Bluetooth Radio Adapter' you have?
thanks. but no difference, now it doesn't detect the mouse often, but detects devices not even in the house!You can find the latest Marvell AVASTAR Bluetooth Radio Adapter driver in the Surface Pro 2 Firmware and Drivers pack. Unpack the package and manually install the BT drivers on your SP1
Download Surface Pro 2 firmware and driver pack from Official Microsoft Download Center
uninstall alone didn't work, should i delete files also?Looks like a kind of BT cache. Try uninstall