iTunes cannot see the music that was "matched"
I am running iTunes on a Lenovo (64 bit Windows 7). I "matched" my library which was on a network hard drive at my home. It took a long time, but seemed to work OK. Now, I am away from that hard drive, and I am using the same computer. iTunes shows all the songs in the library, but cannot find the music. It sees (and can play) about 20 out of about 7000 songs. About 200 other songs show the cloud with an exclamation point (error), and the rest have no cloud symbol at all. Almost all the songs show an exclamation point in the first column. I tried deleting the library on the local hard drive on my computer, but iTunes still tries to point to the local hard drive. If I try to play a song without the cloud symbol, iTunes asks me if I want to try to find it. I tried turning iTunes Match off and back on, and iTunes tells me there are about 7000 songs available, as it should, but I cannot get to them. Thanks for any help.
iTunes -OTHER, Windows 7