Recently, Ports on the Nexus1000v became blocked after performing a Nexus 1000v Upgrade.
After the upgrade a whole bunch of the VMs lost network connectivity, whilst IP Storage Etc.. Stayed up
In vCenter, Under Networking the Ports on the DvSwitch were showing as blocked
Stumbled across this the other day – When your Nexus 7 Runs out of battery and has to shut down, it get itself into a state where it wont power back on, mine even went through a constant reboot phaze. To fix this:
1) Plug in the charger and press the Power button and the Volume Down button together.
2) You will see a menu pop up. Use the Volume button to go down to Power Off and press the Power button to select it.