Win7 introduced a more secure networking protocol called Homegroups. Access is encrypted with a random alphanumeric key that must be shared with other users.
To connect and shared files between Win7 & Win8 , one PC must create a HOMEGROUP and password then it must be entered by the other PC. THis must be accessed in both PC"s in the Control Panel. YOu can find it by search or from the control Panel> detailed view> HOMEGROUPS> Create Homegroup.
However folders must be shared next from each host. You can use the Library feature of folders or navigate directly to any folder and right-mouse> SHare with> and choose Homegroup> then choose Read or Read/Wirite in Win7 and in Win8 the same will say View or View & Edit. Repeat for each folder you wish to share. Media Streaming is an extra service which is optional for sharing streaming from WMC or WMP media files.
After sharing is defined you can access the other computer from Explorer << Win+E (keys) then you can treat the remote folders as if they are local using the same methods, drag & Drop, click open or right mouse> optiosn. or send to> Desktop a shortcut. There will be folders for MEdia Streaming if enabled or the usual Documents/Pictures/Video Downloads or any other folder you created a share.
YOu can use Remote Desktop to perform both setup functions from one PC and copy the HOMEgroup key from the remote desktop to the local Homegroup setup menu field. If the two services for HOMEGROUPS were disabled at anytime since Win7 or 8 was installed, they must be enabled and started.
There is also Advanced Sharing for more complex rules on privileges.
Homegroups are not avail in Vista, XP so for this Workgroups are used with the same domain groupname eg Workgroup or MSHOME (passe) and then login using the local authenticated admin password not the remote unless you have created remote user logins but normally it will expect source names for \\pcname\username
assword or fill in 2 fields.