Why does it leak water, does not drain, and squeals throughout wash cycle?

Drain valve stuck or faulty

If your machine has a tray that you put softener in, softener is the last thing added at rinse time. If it is plugged or has a leaking supply hose, this would cause water paddles and appear to be related to the drain cycle.

It is so common that the drain leaks in many ways and is the most problematic fault in a washing machine. In all occasions it is important that your observation is most important and so is vital to the identification /rectification and solution. If you have noticed that water has leaked then as the drain hose pump/valve and fittings are located on the underside of the machine it is important that you look for possible leaks here. In some cases the drain hose would be clogged at the drain end to outlet of the house and so there will be back flushing resulting in overflow to the outside. Also the drain pump/valve can be clogged or the drain hose clamps can be loose on the grip which can all cause the leak to occur. Removing and cleaning the drain pump/valve, tightening of the hose is also very important. Also water can leak if there are gaps on the front door gaskets and must be checked but this will happen only during the cycle and not on the drain cycle end.

Tips for leak: http://www.espares.co.uk/advice/washing-machines/a/7/1461/do-you-have-a-leaky-washing-machine.html

You may have a pin hole in the hose. I would replace the hose.

Possible there is dirt in the drain which seems to clog on the drain pump /valve and so when the drain cycle is activated the pressure makes the noise on the pump.
Check for tips to remove the Pump;

http://www.espares.co.uk/advice/washing-machines/a/7/1373/how-to-replace-the-pump-on-a-washing-machine-.html

Best guess is the drain pump, replace it.

Sounds like the pump.  When it first fills the pump recirculates the water, then it comes on at the end of each cycle to drain the water.  The pump is on the bottom of the machine, on the right side. 

1 Beep/E10--Error: Water doesn't enter Cause: Water supply problem, Check kinks and faucets
1 Beep/E10--Error: Water leaks Cause: Water connections loose,household drain clog,oversudsing. Correct problems.
1 Beep/E10--Error: Dispenser drawer is open Cause: Washer will not operate if drawer is open.
2 Beeps/E20--Error: Water dosen't drain. Cause: Drain is kinked or household clog. Correct.
3 Beeps/E30--Error: Drum overfilled. Cause: Inlet valve,pressure switch or control board failure.Select drain/spin to remove water. Restart.
4 Beeps/E40--Error: Door is open. Cause: Washer will not operate if door is open. Close door.
5 Beeps/E50--Error: Motor is overheated. Cause: Wait 30 minutes to cool down. Restart.
7 Beeps/E70--Error: Cold water doesn't enter. Cause: Hoses crossed,faucet problem.
15 Beeps/EF0--Error: Oversudsing. Cause: Too much detergent,or improper detergent for machine.
15 Beeps/EF0--Error: Hot water doesn't enter. Cause: Hoses crossed,faucet problem.


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Ours did same thing after nearly same amount of time.

Run a couple of sanitary cycles without any cloths.

Only use HE detergent. 

Problem stopped after this