electrical safety issue NEED HELP

[lHEadShoT]

i have a situation with my computer i don't know what it is but i have done a lot of test so please help me identifying this and how to solve it
My build:
CPU: i7 5820k
MOBO: x99 g1 gaming 5p
PSU: seasonic m12 750w
GFX: g1 gaming gtx 980 ti
CASE: NZXT phantom 530
RAM: 16G Crucial ballistic
my PSU uses a 2 pin power cable also my whole apartment doesn't have that third ground cable it's only 2 cables .. So when i touch my computer case while it's running and feet to the ground i feel link some current is passing through my finger so i have tried different things
1. I put a nail into the wall and connected it with a wire to one of the nails in my case ==> it reduced the amount of current passing through my finger but not totally gone
2. i bought a 3 cable power cord for my PSU which has three pins not two at its end and connected the ground pin to the same nail and the two other pins normally to the wall ==> there is no current in the case body while it's running but when i turn off the computer and turn off my PSU button on the back the current comes back and stronger than it was before so strong that i can't put my finger on the case for more than 2 second but when i turn on the PSU button on the back the current is gone
3. changed the PSU same issue
4. Tried to turn off all the electric devices in my apartment so i cut the power off from the entire apartment except my room and plugged only my computer ===> same issue
i don't know if that is normal or what to do with it but i think that my case isn't grounded and that isn't a static electricity ,, so any help would be totally appreciated ,,,, the computer is working fine but I’m worried the it might hurt the components in the long term

 

[fixxxer113]

If you have a grounding issue in your home, the only person qualified to help you is an electrician. I strongly advise you to not look for answers in any forum, as dealing with electrical installations is a dangerous thing. Just call a professional.

 

[smorizio]

as your living in an apartment....send a letter to the owner saying of the wiring issue of the unit. if nothing happens after a set time make a complaint with the local building inspectors. if nothing moves after that look for a better apt.

 

[rar_54]

You can usually obtain a good ground by connecting to a metal water pipe. Just be sure it is a water line and not a gas line. Use a 14 awg wire to move the circuit that is currently connected to the nail in the wall and securely clamp it to metal water pipe.

 

[guanyu210379]

Using water pipes as temporary grounding solution is not bad.
But..
You or someone must solve the grounding issue in your house or apartment properly.
The next time you have thunder storms or similar disturbances, your electrical equipments and electronics at home might be broken, one after another.
You have quite a big problem there, do not under estimate it!

 

[lHEadShoT]

thanks guys i will try to use water-pipe as a grounding solution until i find a good electrician to check this problem