System won't boot in new case

[Conners]

Ordered up an Enlight case (300 watt psu) from comp-u-plus in order to build a computer for my friend. Once I install all of the components (Abit BF6 mobo w/ PIII 800) it powers up but nothing appears on screen. I thought the mobo might be dead so I tried it in my computer case. I booted up perfectly. Then I figured it was the power supply so I moved everything back to the enlight case and tried my psu. Same result as earlier, nothing on screen. If I press the reset button the monitor refreshes but still nothing on screen. I can't figure this out at all. Is it possible in any way for a case to prevent a computer from booting??? Any advice would be appreciated.

 

[WaTaGuMp]

Well if the only thing you did was transfer into a diff case then I would check to make sure you have the leads on the switches from the case that plug into the mobo on correctly. Those leads can be put on upside down, wether or not thats your problem its hard to say, it just seems to me thats the only thing it could be,since you checked the PSU and MOBO already.

 

[Big Lar]

Could be something shorting out/ maybe something from the I/O shield touching the mobo or something to that effect.......