After restoring a system image (created with Drive Snapshot) my Homegroup stopped working. It happened 2 times in 2 days. It doesn't work because some services failed to start (PNRP service, Peer Networking Grouping). When I try to start PNRP i get the following error in Event Log: BODY{font:x-small 'Verdana';margin-right:1.5em} .c{cursor:hand} .b{color:red;font-family:'Courier New';font-weight:bold;text-decoration:none} .e{margin-left:1em;text-indent:-1em;margin-right:1em} .k{margin-left:1em;text-indent:-1em;margin-right:1em} .t{color:#990000} .xt{color:#990099} .ns{color:red} .dt{color:gree