New mobo or psu turned off power to whole house...

Hey guys...
I bought a new mobo yesterday.
The asus p8z77-v
Then when I plugged it in with my thermaltake tr2 800w psu...
Nothing... All I can in my psu was some electrical crackle... So I disposed of it.
And got a corsair tx v2 750w psu....

After 6 hours of playing and stuff.
It's time for me to go to bed...
So I turned off my pc...

Then 5 minutes later I heard a pop.
Lamp turned off, with every appliance in the house.
Ps everyone is asleep...

The mobo has this epu feature which somewhat leaves the mobo idle with power even when pc is turned off.
Or is the psu faulty?

Circuit breaker kicked in...

I'm thinking of plugging out the pc every time I turn it off...
Or getting a surge protector...

My pc.
I5-2320
Asus p8z77-v mobo
Corsair 750 tx v2 psu

Help?