Alright guys, I upgraded my primary computer with a socket 754 mobo & sempron 3400+, 6600GT, 2GB PC2700, and 500W PSU. So, logically, I took my old Socket A mobo and put it in my OTHER computer (still running a Duron 750). I'm having problems with it now.

The old setup:
PCChips M810 motherboard (SiS chipset) - onboard LAN
AMD Duron 750 (not overclocked)
Stock heatsink & fan, no case fans (wth?)
nVidia GeForce 440MX
256MB (2x128MB) old crappy RAM
250W PSU

The new setup:
FIC 1st Mainboard AN11 motherboard
AMD Duron 750 (unlocked it with the pencil trick, still stock clock)
Thermaltake Chrome Orb CPU heatsink/fan
2x 80mm case fans (one in, one out)
nVidia GeForce FX5500
256MB PC2100 RAM
NIC expansion card
450W PSU

Now, I had some issues with hooking up the "light show" in the front of the case (the power switch, HDD LED, speaker, etc). Currently I have it all figured out except the power reset switch, which has been left disconnected until I can find my motherboard manual or get an answer from someone at FIC.

It starts up fine, all the fans work, and I can hear it booting up and going through the startup process (including the floppy beeping), then it idles (I'm assuming at the Windows XP login screen). However, I don't get a display on my monitor at all. I tried the old PSU for the heck of it and it didn't solve my problem. I'm 100% positive there is plenty of air circulation and that the orb is properly seated on the CPU with enough thermal grease to conduct the heat. All the jumpers on the HDD, floppy, and CD-ROM drives were left as they already were and just plugged into the PSU and the motherboard. IDE cables are firmly plugged in, as well as the graphics card.

What could possibly be causing me to get no display? My guess is that I need to go back to the MX440 but then again, I stayed in the nVidia family and they all use the same ForceWare driver. I'm stumped.

Someone, anyone, please help

Do you get any BIOS beeps?

Could the FX5500 be seated poorly or be a bad card?

No, there are no BIOS beeps. I know the FX5500 is good because it was running on this exact same mobo a couple days ago and has been handled very carefully with no static. I seated it twice to be sure it was in there tightly, but I can always check that again tomorrow.

What thermal paste are you using?

Could you have chipped the core of the CPU when you put the HSF on?

this is hard cos you've changed so much

can you see the bios on the monitor starting up? like is there any output from the graphics card? you could try putting the old graphics card in to rule that out? if so it may be a setting on the motherboard that hasent been set up to tell it to use the agp slot for graphics.
also is the motherboard making alot of beeps like morse code?
it could be that its not seeing the hard drive properly(what i mean is going to the wrong boot sector)? whack in a old hard drive if you have one and cheak this out
have a look in the bios for that and cheak its ok.you chould cheak the hard drive is plugged in properly i think whats happend is you've missed a step some where or the plug and play part of the bios is being a bitch. dont think its a hard wear fault.

plug and play is good when it works but it produces pc users with less knowledge. just thank your lucky stars your not working on the old pc's where you needed to know everyting down to howmany sectors heads and platters your disk had.

I'm using a thermal pad, not paste. Just a generic pink one. That's what was on there before. And I know I didn't chip the core because I was extremely, extremely careful with it (chipping the core on my Athlon XP 1800+ is what prompted me to change to 754 on the computer I'm using right now).

I will check the jumpers if I can get FIC to email me a copy of the manual (their FTP is down), but I don't think that's going to be it since I haven't changed anything on the motherboard except the chip and HS/fan combo since moving it to the new case.

The mobo makes the one beep right after the floppy makes its boot-up noise to indicate that POST is finished, then it idles. On other forums, people are telling me to try my old graphics card and see if it works, then tweak the BIOS and install the new card. If that doesn't work, I will try a different hard disk.

"I'm using a thermal pad, not paste. Just a generic pink one. That's what was on there before."Are you reusing the same thermal pad you separated from the heatsink before?

Assumming you connected everything properly...

If your PS turns on, it's fan, the cpu fan, any other fans spin up, the hard drive spins up and initializes (a soft chattering sound) then the hard drive does nothing further and just sits there spinning, and you have no video at all, not even in the first part of the boot, you probably are trying to use ram that isn't compatible with your mboard - this is a COMMON problem.
See this info, especially response 12:
http://www.computing.net/hardware/wwwboard/forum/41305.html

- if you do have video in the first part of the boot, the hard drive continues to load things for a while after the above, then your screen goes black just after Windows starts to load - you have improper video settings in the bios.

If your nVidia GeForce FX5500 is AGP, you must go into your bios Setup, and set it up to initialze AGP video first (as opposed to PCI) - on many computers if the bios is set to PCI and you have an AGP card, you will get a black screen right after Windows loads and thereafter. Some bioses also have a setting to assign an IRQ to the AGP video.