toilet shutoff valve not getting water
The noise was probably from the washer falling apart, you might be able to see it but it could be wedged some where out of sight. You could take the supply of the tank end, run it into a bucket, if you have water, then you need to check inside the tank. If no water comes out of the supply at the tank, you check your new shut off valve, if you soldered, maybe it got damaged. As a side, if this is the only toilet, to get by, fill a bucket in the tub and use to flush the toilet.
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