Help new Matrix case Asus A7NX8 MotherBoard

[IVANHOE7]

My Mother Board will work fine outside of case, once inside it won't post. I replaced the brass standoffs with plastic, placed cardboard under motherboard in case, yet won't post.I placed Motherboard in case on cardboard but not attached and it wouldn't run right but would post. Seems like an evil force is inhabiting my new case. I placed electrical tape around AGP connection around video card, no hardware in PCI slots I Tried two power supplies one outside of case that was shielded and it didn't help. I also have cardboard behind Motherboard with plastic standoffs I have only video card attached with electrical tape around metal and have remove plate for USB, mouse, keyboard ETC. Still doesn't work. In fact it starts acting funny with Motherboard partly inside sitting on cardboard

 

[ski]

See if it works in a different case.
If so, then replace yours.

 

[IVANHOE7]

Finally fixed it by putting rubber washers under the plastic posts, it then worked in case lying on side,but wouldn't right side up. Finally I taped Valcano fan upward on case since gravity was putting downward pressure on CPU. Should have got lighterweight cooling fan

 

[ski]

You're right. Some cooling fans are monstrous.
And thanks for posting back with the solution.