So the plug in the bathroom since fell in, coming off the attachment to open and close it from the top. When I got under the sink, I turned the shut off valves all the way to the right and the water stoped working. I unscrewed the attachment and fixed the plug (on the drain no the water) and when I turned the vlaves back on, no water. It dribbles just a little ifi turn the sink all the way on, however I cant get full water pressure. Any help?
the cheapest way is to tear apart the valves and replace the rubber parts then make sure you take the screen off the faucet before you turn the water back on, clean the screen and put it back on and, you're done
In some homes the place the sink is fixed to the wall, as on your case, there may be close off valves interior the basement at as quickly as under the bathing room. If there are none there then you certainly will maximum possibly ought to close off the main water the open the tub room sink faucets to empty off extra water. stable success.
It is common for gate valves to act up from not being used---they rot and get gunked up with mineral deposits...Try working the valve a few times to get the gate to open all the way. If this doesn't work you will need to change the valves..I suggest quarter turn ball valves, They cost a little more but they are bullet proof...If you get compression type---you can cut yours off and install with two wrenches -and no need to solder.
If you turned the shut off valves too tight you may have cut the rubber gasket which now partially plugs the opening of the flow line. You'll have to shut off the water to the house and take apart the valve and replace the rubber gasket.
Valves could be limed up or you may have not have a good valve since you shut it off, it could have been damaged. You may have to replace the valves and be done with it.