Network shares not showing up

I’m having the same problem: My computer’s HDD won’t show up in network storage. It used to work fine a few months ago, but I hadn’t used it for a long time until today.

I changed the workgroup name for both my computer and WDTV Live Hub. My drive showed up for a few seconds and then I was prompted to enter a username and password. After entering the username and password (which at this time I am assuming is my Windows login and password), I received a message saying “known error”. Since then it isn’t showing my drive any more.

Strangely enough, I can still access the WDTV Live Hub hard drive from my computer.

I’m using Windows 7 x64 and Linksys WRT160N router. Any suggestions?