Network working only one way, no access

Got my new TP-Link router up and running all is well, my spare rig in ther conservatory is connecting to the net fine and it is accessing my main rig but I can not connect to it from my main rig I have done everything I can think of.
All open/owned/shared with everyone, so yes all permissions are ok.
Managed to get this from event viewer :

Windows can't communicate with the device or resource (TREV1-PC) It is available but is not responding to connection attempts. A firewall or network security policy on the remote computer might be blocking the connection on port "file and print sharing resource".RootCauseGUID{3546DF1C-25BD-493F-A71B-0B2E7872A24B}RepairOptionMake sure that the device or resource (TREV1-PC) allows incoming connections for File and Printer Sharing Windows Help and Support can provide more information about Windows Firewall.RepairGUID{7DEC9E90-9F4E-41EC-BE6A-68A8FC0B4CE4}SecondsRequired1SIDTypeRequired0HelperClassNameTransportConnectionInterfaceDescInterfaceGUID{00000000-0000-0000-0000-000000000000}
Checked with firewalls down stillno access :
The remote computer isn’t responding to connections on port 445, possibly due to firewall or security policy settings, or because it might be temporarily unavailable. Windows couldn’t find any problems with the firewall on your computer.
Root Cause Guid: {767897d8-7825-4413-ad95-d2ab2ca37281}
Repair option: Contact the service provider or owner of the remote system for further assistance, or try again later
RepairGuid: {36e90720-4fb8-4f74-a98f-f3ecce18873f}
Seconds required for repair: 0


Getting this mesage from network diagnostics log

Getting this mesage from network diagnostics log
The remote computer isn’t responding to connections on port 445, possibly due to firewall or security policy settings, or because it might be temporarily unavailable. Windows couldn’t find any problems with the firewall on your computer.
Root Cause Guid: {767897d8-7825-4413-ad95-d2ab2ca37281}
Repair option: Contact the service provider or owner of the remote system for further assistance, or try again later
RepairGuid: {36e90720-4fb8-4f74-a98f-f3ecce18873f}
Seconds required for repair: 0

Are these both Win7 machines? If yes, is Network Discovery turned on?

Can you ping each other? Or is this one way only too???

Yes both win 7 machines, network discovery is on, I can access one machine main one from secondary but can't access the secondary one.
not sure on how to ping a machine sorry bit thick when comes to networking

Turn off any firewalls, note that many of todays antivirius products include a firewall too.

I recently upgraded my Norton from 2011 to 2012 version... the 2012's firewall blocked any network access until I turned it off!

Sorted it now, it seemed to be one of the service security pollices.

Glad you got it working! Could you be so kind as to specify which security policy?

Now your asking think it was this one :
Please enable the following policy for both Windows clients:

[Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options]
-Network access: Let Everyone permissions apply to anonymous users.