win 32: RPC server is unavailable

A Google search for https://www.google.com.au/search?q=%22RPC+server+is+unavailable%22+driver+install yields quite a few troubleshooting steps (this - http://h10025.www1.hp.com/ewfrf/wc/document?cc=il&dlc=he&docname=c01394647&lang=he&lc=en&product=3434459 - being one of the better ones).

If you still haven't resolved it after trying the fixes from that Google search then please let us know what you have tried, what happened and any error messages or other symptoms you came across. That way we won't waste our time enumerating all the possible causes that are already out there on the Internet.