No bios or motherboard boot screen

dude807

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I recently swapped parts from one case to the other. Everything seems to be working except for the motherboard. The led lights will come on and all my devices will start but I get no bios screen or startup screen. Could the screws I used to keep it in be effecting it? It can't be the ram, cpu or gpu because the motherboard has its own gpu built in, and didn't touch the ram or CPU. Please help me, what could be causing this? Also, when I try to turn it off by holding the power button it doesn't do anything. I have to turn the switch in the back on the psu.

Processor: AMD FX-4100 Zambezi 4.0GHz Socket AM3+ 95W Six-Core Desktop Processor FD6100WMGUSBX
Graphics card: AMD Radeon HD 7850 Graphics Card
Eyefinity, DirectX11 Support
1X HDMI, 2X DVi, 2X Display port Available
15% Overclock Available if desired
Hard Drive: Seagate Barracuda 1.5TB 7200 RPM SATA 3.0GB/s3.5
32Mb Cache
Operating System: Windows 7
RAM: Skill Ripjaws X Series 12gb 240-Pin DDR3 1600 MHz (PC3 128000) Desktop Memory
CAS 9 Latency
Equipped with Advanced Aluminum Heat-Dispersing Shield
motherboard: GIGABYTE GA-78LMT-S2P AM3+ AMD 760G Micro ATX AMD Motherboard
Case: corsair 500r

Thank you for your help!
 
I'm not familiar with that particular mobo but I doubt the mounting screws would affect anything. What could cause a problem is a screw or some other metal part loose in the case and shorting something out. Pick up the case and shake it while listening for rattles. If you hear one find it and remove it. If not pull the mobo and make sure there isn't anything trapped between the bottom of the mobo and the case. If it is big enough and tightening down the mobo clamped it into place it won't rattle.

It sounds like 2 different problems.

Power - it sounds like you have the case connector from the front panel button incorrectly connected. That might actually be causing the whole problem. Double check it. First disconnect it and try to boot. If it boots recheck your mobo docs for where to connect it.

Video - you say mobo has video and you have a graphics card. Pull the graphics card and attach to mobo graphics. While you have the cable loose check for bent pins in the connector and/or socket and proper seating. I know this sounds dumb but also check that the power plug on the monitor is seated correctly and if there is a separate switch make sure it is on.

 

dude807

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No beeps and yes I'm using the graphics card. I didn't test it outside the box because It worked perfectly fine in my old case
 

dude807

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Yes, the cable is connected to my monitor just fine. But even if it wasn't I would be able to shit it down by holding down the power button