Currently I have a new build going on, everything is in place but when we boot up the PC, all the LEDs come on, CPU is making a "working" noise, fans are powered, but we have no signal to the monitor. We have tried to clear CMOS by jumping the pins and removing the battery. I have an http://www.newegg.com/Product/Product.aspx?Item=N82E16819103846, http://www.newegg.com/Product/Product.aspx?Item=N82E16813157200 http://www.newegg.com/Product/Product.aspx?Item=N82E16820134492 and a 400W Corsair PSU. Any help would be appreciated.

Take out all but one stick of the RAM, and boot it. Once you get into Windows, shut it down, and you can then put the rest of the RAM in.

If I recall correctly, it's a glitch in Windows.

Try removing one module of the RAM (if its 2 1GB sticks anyway). Also try pressing del (to enter the BIOS), sometimes this helps especially on boards with intergrated video.

@TheMonsterHuner: I believe that glitch was more than 2GB prior to installing Windows.

Its a new PC build, I havent installed the OS yet. Nothing appears on the monitor, I cant even see the BIOS.

edit-And I have removed 1 stick of the RAM....played musical RAM with each stick in the different slots.

Hm, well either way, try booting with just one stick. If successful, turn it off and put the other stick in.

Like I said, I have removed the RAM stick and changed DIMM slots. Also this is using the onboard ATI Radeon HD 4250. The monitor just sits there, checking different signals. Even after trying to enter BIOS.

Did you try using the VGA input? Also try holding down Del during boot to make sure to enter the BIOS.

Yep, on both of those, VGA just has the same effect, and I have the Asrock790GX in my main PC, and its F2 to get into BIOS on that one, neither of them worked. Everything on the board seems to be connected properly.

If you can, attempt to use a different monitor. I have had this same issue before with getting no monitor signal, and I believe that switching monitors (the one I switched to used a VGA input, rather than DVI, and as such, used my built in motherboard vga input, rather than the graphics card DVI inputs) fixed it. Once I got the computer running and all my drivers installed, I was able to switch to my other monitor.

One of my computers had a problem a bit like that, it just didn't start everytime. I had to just keep restarting it and hope it would boot, never figured out what the problem was :shrug:

You have of course checked that everything is plugged where they should be? And that the monitor is working and the cord or plug isn't faulty?

Already tried that. I have plugged it into my older VGA only monitor, my 37inch Vizio and the new monitor. Also the monitor works on my main PC fine. Still no luck, everything looks to be in the correct spots.....I mean there arent too many connections.
24pin Motherboard
8pin CPU
2 SataII
Front USB/sound/Firewire
fans
Front Panel.

I have a recalcitrant ASRock (though not the same model) that refused to POST, and the reason was that the Clear CMOS jumper was missing. Turned out it had to be present and in the RUN position. Make sure it's jumpered RUN, then clear CMOS, put the jumper back in RUN, and try again.

Check the P4 connector; if you have the new GPU installed, check the PCI-e auxiliary connector(s); check (repeatedly) that the RAM is seated; check that the as-delivered BIOS on the motherboard supports your processor. Check for an onboard switch or jumper controlling the built-in VGA output. Disconnect the disk drives; I've had one computer that wouldn't POST because of a bad (maybe it was shorted) disk drive.

Well this PC will be using the onboard video chipset, its not meant for a gaming PC, and the 4250 will be enough for what it needs to do. On this board the CMOS is in the Normal position, there is only the normal position and the Clear CMOS position. The BIOS should support the CPU, since it says it supports the Phenom II series and this is the Phenom II 555. Also unplugging the Optical drive and the HDD didnt work. I remember I had the same problem on my 790GX when I built it last year.....although I dont remember what fixed it.

Could it possibly be a dead CPU? Would it be worth the time to take out my 955 from my gaming PC and put it in the 555's place to test it?

Do you have both mobo power cables plugged in?

Yeah, the only two on the board would be the 24pin and the 8pin CPU, both of them are plugged in. Testing it with nothing else plugged in right now (no USB headers, Sata) and it still will not show anything on the monitor.

I would try swapping out the RAM completely... Is the memory from your gaming computer compatible?

No, the RAM in my gaming PC is DDR2 @1066 and the RAM in the new PC is DDR3 @1066. It turned out to not be the CPU's since I traded them out. The 555 worked fine in my gaming PC, so it has to be the RAM in the PC. If it was the motherboard, would we still be able to turn it on using the motherboard headers connected to the case?

Sorry to have to bring the up again....but I was wondering, the onboard speaker doesnt even make any beep codes when turning on. Which would be the safest bet to assume whats wrong? Bad motherboard or bad RAM. I tested the CPU and it worked fine in my gaming PC.

Check the case connectors. The ones to the power/reset/etc buttons
I once spent about 2 hours pulling my hair out before I realised that one of the connectors was upside down, and was causing things not to work.

Whenever I build a PC it usually doesn't work the first time, and then once I unplug everything and plug it all back in it works.

I have to say, thanks for everyone's help, but I just cannot get it to display. Everything has been reseated, case connections taken out and placed back in. CPU tested and working fine. Its either the RAM or the Motherboard. And since its not even giving me beep codes (it should be the same as in my gaming PC, since they both have AMI BIOS) I assume its the motherboard.

This tells me the board is borked. Although some Mobos today don't beep at all when all is well, though usually it is one beep when POST is successful. Now, Intels require an additional 4 pin connector beyond the 24 pin and 8 pin. Is that the case here?

Try this, take everything off of the board, RAM, CPU, GPU, HDDs, Optical and connect up a glass monitor to the VGA port (this might work with an LCD) and turn it on, you should hear beeps and hopefully see a text post on the screen. If you do not, then the board is bad. If you get a post, then put in the CPU and try it again. Repeat until you find something that causes the hang.

Nah, this looks to be a bad board, Newegg replaced the board and is shipping the new board tomorrow. Thanks for everyone's help, this can be locked now though.

Closed by request. Better luck with your next motherboard.