Hi,
Firstly, take care not to divulge sensitive information on the internet. For example I have edited the computer and user names I have displayed below. I did this even though the computer and user names I actually use are nothing to do with my real name - paranoid eh!
There are people who can assist you here but you will need to provide some further details.
Please answer Ray's question "What do you mean by "access?" Drive shares, printer shares, RDP?"
If you are not sure what that means you could post a screenshot of you accessing it.
Please also open a Command Prompt and provide the output from the following commands on BOTH computers. The computers should BOTH be connected to the network and you should be "access[ing] hers fine" before you execute the commands. (only the VIEW command actually needs the connection).
You can easily capture the results with screen shots if you don't know how to copy/paste from the command line. Alt[PrtSc] does a screen shot of the current window.
One of the commands requires that you provide the computername of the OTHER computer. You will first need to determine the names of both computers with say "set compu".
Commands to run.
set compu
net share
net use
net view \\OTHER_COMPUTER_NAME
In the last one you should provide the name of the other computer. I don't have another computer handy so I can't show you an example.
C:\Users\Fred>set compu
COMPUTERNAME=APOLLO
C:\Users\Fred>net share
Share name Resource Remark
------------------------------------------------------------------
C$ C:\ Default share
IPC$ Remote IPC
print$ C:\Windows\system32\spool\drivers
Printer Drivers
ADMIN$ C:\Windows Remote Admin
Users C:\Users
The command completed successfully.
C:\Users\Fred>net use
New connections will be remembered.
Status Local Remote Network
----------------------------------------------------------------------------
Unavailable Z: \\192.168.1.65\public Microsoft Windows Network
The command completed successfully.
C:\Users\Fred>net view \\OTHER_COMPUTER_NAME
Once you provide the info I think that someone here will be able to assist. Quite possibly not me as I don't have much recent experience with windows home networking.
AMAZINGLY, these commands have not changed since before 1990 - thank you Microsoft. It's not all change for the sake of change.