Windows File Sharing does not work with firewall disabled

Question

I have a Windows 7 computer which I am trying to use for sharing files over my home network (but not using a homegroup).

Here is what I have tried so far.

• Network Discovery and File and Print Sharing is enabled for both Private and Public Networks.
• Windows Firewall is disabled.
• I can access files on other computers properly.
• The System process is listening on Port 0.0.0.0:445.
• The user password is 8 characters or more.
• The 4 services involved are all running.
• IPv6 is enabled, but I don't know if that matters for regular file sharing.

From the computer in question,

• Accessing \\localhost works properly.
• Accessing \\computer-name only shows the share list but I can't open them.
• Accessing \\ip-address doesn't even show the list of shares.

From other computers, I am unable to see anything and I am never prompted for a password. It times out after 30-60 seconds.

Is there something in Event Viewer which I can use to further determine what the problem is?

Reinstalling Windows is definitely NOT an option.