android device does not show up under Android Device Chooser

android device does not show up under Android Device Chooser

pI had 1 nexus 7 and it is working perfectly fine using eclipse android
studio. It shows up normally and I can deploy apps on it. (I am using win7
64)/p pRecently I got 3 more Nexus 7 devices (from same batch, our
university bought them at same time). My problem is, when I connect these
new devices they are not being detected by ADB./p pI have already turned
on development option, usb debugging and also allow third party apps from
security menu. All 4 devices are updated to android 4.3./p pI also tried
to do strongadb kill-server/strong and it dint help. The only tablet I can
work with that shows up on android device chooser, is the older ( by that
i mean the first) tabled that I was working with./p pAlso under Device
Manager, under Portable Devices only the old tabled is showing up. The new
ones don't./p pAny idea or soloutions?/p