Help Please!

[davidyu]

I have recently bought a new case Antec 300, removed everything from my old computer and put it in the new case. When i turned it on the fans would spin and stop, spin and stop but no boot sound. I tried removing it from the new case and then plugged everything in without the case and it would work. So then i put it back into the case and then fans would just spin and stop spin and stop. SO then i took it out again tried to boot it up without the case again but would just spin and stop spin and stop.

I have did this for 2 days and now i am frustrated sigh.

Any Ideas?

 

[MRFS]

Sometimes the underside of the motherboard is touching some part of the case, and that contact point causes a short-circuit.

Double-check your stand-offs too, because you may have installed one that is not needed, and it's making contact with a motherboard circuit.


MRFS

 

[buzznut]

+1 It sounds like there is an issue with the new case touching the board or a stand-off sort of thing.

 

[davidyu]

am i suppose to put a stand off screw in every hole to my motherboard? also i dont have a io shield installed do i need that?

 

[buzznut]

Yes you need that.
Every hole on your motherboard that is protected by a copper grommet that matches a hole on the motherboard tray should be used for the most stability of your mounting.

 

[GhislainG]

Install standoffs only where there is a corresponding mounting hole in the motherboard.

While not an absolute must, an I/O shield should have been provided with the motherboard.

 

[davidyu]

=/ right now i have hexagonal screws with teeth under them is that the problem? i should be using the screws with a flat bottem correct? =/

 

[Spitfire7]

Hey guys, if my case already has built in metal risers is that good enough? Its all the same material as the case, it is just indented creating a riser for the mobo to sit on.

Second, I did get some small cardboard washer looking things, should I install those underneath the mobo, in between the case risers and the mobo cutting off any metal to mobo contectivity?

 

[GhislainG]

davidyu, as long as you have one standoff installed for each motherboard mounting hole, you'll be fine. Short circuits occur when people install all standoffs that could possibly be mounted under a standard ATX motherboard, but standard ATX motherboards usually have 9 holes, not 10. When in doubt, read the installation instructions that came with your case.

Spitfire7, when required, the isolation washers should go between the motherboard and the standoffs. A good answer can be found at http://www.techsupportforum.com/hardware-support/motherboards-bios-cpu/102326-using-motherboard-standoffs-isolation.html

 

[Spitfire7]

davidyu, as long as you have one standoff installed for each motherboard mounting hole, you'll be fine. Short circuits occur when people install all standoffs that could possibly be mounted under a standard ATX motherboard, but standard ATX motherboards usually have 9 holes, not 10. When in doubt, read the installation instructions that came with your case.

Spitfire7, when required, the isolation washers should go between the motherboard and the standoffs. A good answer can be found at http://www.techsupportforum.com/hardware-support/motherboards-bios-cpu/102326-using-motherboard-standoffs-isolation.html

Thanks ghislaing,

Would i still need the copper standoffs even though my case already came with pre-made standoff risers? From the other forum it sounded like more connectivity from the mobo to the case the better for grounding purposes.

 

[GhislainG]

You need to install the additional standoffs only if one isn't already there for a given mounting hole in the motherboard. Don't add additional standoffs on top of the ones that already exist - if you do, you won't be able to fit the motherboard properly.

 

[davidyu]

thanks for the help guys got it working somehow