new pc build dont fully turn on , please help

[tonschk]

Hello, can you help please ?, I have build my new computer with the MARS FOXCONN Motherboard, but when i turn on the pc , after a few seconds i hear the normal single short beep from the motherboard , after that in the black screen appeared some information about the video card 8800GT 512Mb etc , after in the red screen appeared the two greek MARS Motherboard black warriors and a sentence " PRESS TAB TO SHOW POST SCREEN , DEL TO ENTER SET UP , but the PC immediately (at once) turn off automatically ,after two seconds the PC turn on automatically and repeat exact the same process (as before) again and again and again and again ,there is a blue small light next the motherboard connections of the front panel ,and a red smal light close to the extreme right ram memory slot .please help , my system is PSU 650WATTS seasonic , intel core 2 duo 3GHz E8400 6Mb cache, sata Hard disk 320GB HITACHI , 3GB RAM 800, nVidia Sparkle 8800GT 512Mb fanless cool-pipe, sata opticalDrive , Coolermaster CM690case ,thank you

[-Pv-]

I'm unfamiliar with THAT particular motherboard, but don't panic. It looks like things might not be that bad.

Good news:
Your CPU, memory, and CGA video are working because you can see the bios post. Since this is the 1st time you started the computer, the bios wants you to at lease VISIT the bios settings so you can set the clock and visit all the screens to see all the components of your computer are working. I suspect the reboot is a timeout because you are not pressing TAB (this is unusual- you are sure it's not DEL?) soon enough. Go ahead and press the SETUP button, set the clock, visit the screens (don't touch anything you do not understand) and with the OS installation disk in your CD drive, SAVE and EXIT the bios. Your computer should detect the OS disk in the drive and start installing it.

If all the components of your computer are working, things should go smoothly after that.
-Pv-

[ghost_666_rider]

The two LED's you are referring to only indicate its getting power. Could be almost anything causing it to not post, but hopefully you tried the simplest things allready like reseating your ram.

Try hitting the tab before it resets so you can get into the bios. This will be a little more indicative of where to look for the problem.

[tonschk]

Originally Posted by -Pv-

I'm unfamiliar with THAT particular motherboard, but don't panic. It looks like things might not be that bad.

Good news:
Your CPU, memory, and CGA video are working because you can see the bios post. Since this is the 1st time you started the computer, the bios wants you to at lease VISIT the bios settings so you can set the clock and visit all the screens to see all the components of your computer are working. I suspect the reboot is a timeout because you are not pressing TAB (this is unusual- you are sure it's not DEL?) soon enough. Go ahead and press the SETUP button, set the clock, visit the screens (don't touch anything you do not understand) and with the OS installation disk in your CD drive, SAVE and EXIT the bios. Your computer should detect the OS disk in the drive and start installing it.

If all the components of your computer are working, things should go smoothly after that.
-Pv-

thank you for your help , yes , i have done a mistake is not TAB , is DEL , I willtry your suggestions , but the computer is turning off very very very fast after the sentence " PRESS TAB TO SHOW POST SCREEN , DEL TO ENTER SETUP"

[ghost_666_rider]

As another stupid thought, check that your cpu cooler is plugged into the proper header. If you missed by an inch you'd be in the north bridge power socket, and this board has a default setup in bios to read the rpm of the cpu fan and not to boot if its not receiving signal.

[GlobalExplorer]

Probably you have to check all connections .. I have build dozens of computers and it has happened to me many times that ;

floppy / harddisc cable was not properly connected
graphic/sound card was not firmly in its slot
memory modules / cpu

Did you forget that your graphic card needs to be connected with a power cable? I think my brother also didnt get past the post screen because of that.

Another very nasty problem that happened to me once is that the mainboard was in contact with the case. I had forgotten to use plastic washers which produced some sort of short circuit. The computer wouldn't POST but it all went away once I had installed the mboard a second time with the washers.

Keep checking and you will finally get it running .. in most cases the hardware doesnt take damage, fortunately, but care is necessary.

[tonschk]

Originally Posted by ghost_666_rider

As another stupid thought, check that your cpu cooler is plugged into the proper header. If you missed by an inch you'd be in the north bridge power socket, and this board has a default setup in bios to read the rpm of the cpu fan and not to boot if its not receiving signal.

YES , this must be the reason , I install inside the case Coolermaster CM690 three exhaust fans (140/120mm) and three intake fans (140/120mm ) , and I dont install any fan in the Coolermaster Hyper 212 CPU cooler , thinking that the airflow was already enough with this Six 120/140mm fans , this is the reason ,thank you very very very much

[tonschk]

Thank you very much all, this forum is very helpful , thank you

[-Pv-]

Usually if the CPU fan connector is plugged into the wrong place or not at all, the MB will issue a series of beeps in addition to the startup single beep.
-Pv-

[tonschk]

Unfortunatly , the CPU ( connected/non connected) fan was not the problem ,I connect two differents fans ( 3 and 4 pins) to the CPU fan MOBO connector and the PC turn off again and again after the message ...."press tab to show post screen, delete to enter setup

the extra power connector to the video card is connected properly , all three RAMs are properly seated

[SteamWake]

Double check to see if the heat sink fan is properly seated on the cpu.

Secondly check to see if the auxillary power to the G PU cooling fan is connected.

[Bubblehead Nuke]

You do have the main power supply connector and the secondary power connector hooked up right?

Most motherboards will POST with the main connector, but due to insufficient power to the CPU will shutdown as soon as it tries to bootstrap the CPU.

[Torps]

Originally Posted by tonschk

Hello, can you help please ?, I build my new computer with the MARS FOXCONN Motherboard, but when i turn on the pc , after a few seconds i hear the normal single beep from the motherboard , after that in the black screen appeared some information about the video card 8800GT 512Mb etc , after in the red screen appeared the two greek MARS Motherboard black warriors and a sentence " PRESS TAB TO SHOW POST SCREEN , TAB TO ENTER SET UP , but the PC immediately turn off automatically ,after a few seconds the PC turn on automatically and repeat the same process again and again and again and again ,there is a blue small light next the motherboard connections of the front panel ,and a red smal light close to the extreme right ram memory slot .please help , my system is PSU 650WATTS seasonic , intel core 2 duo 3GHz E8400 6Mb cache, sata Hard disk 320GB HITACHI , 3GB RAM , nVidia 8800GT 512Mb , sata opticalDrive , Coolermaster CM690case ,thank you

Hello,
I ran into that problem myself before, you have something wired wrong. You might have to go through everything one by one to make sure you didnt miswire. I would suggest you go through by unplugging and plugging everything back in place. You might also have to make a change in the bios, maybe, but odds its not really the bios. Worst case scenario follow the instructions n the manual from wiring to bios config.

[Rockin Robbins]

How goes it tonschk? Any luck? Try pressing that delete key to enter CMOS settings and to to the system monitoring page where you can see motherboard and CPU temperatures. Your clue might be there. If the CPU is overheating, for instance, your thermal paste might not working right due to bubbles or voids and heat is not being transmitted to the heat sink. I've seen that several times with problems identical to yours.

Especially if that shows normal temps, unplug all expansion cards that are not necessary to start your computer and all but one stick of memory. You want to boot up in the simplest possible configuration. If that is successful, try peripherals one at a time until you find the culprit. If it doesn't boot, remove the memory stick and replace it with the other. If your problem is a defective component this could be tough.

[McBeck]

I would suggest that you ONLY connect was is needed to POST.
That means, MB, RAM(min amount), CPU, Graphics card.

No HD, No floppy.

That will simpify things for you