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New build has zero boot

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  • Gigabyte
  • Motherboards
Last response: in Motherboards
April 2, 2011 4:30:21 PM

Hey, Im new to the forum. New help with a question. (gigabyte's tech support is taking a bit long.)

I built a new compy and hooked it to my lcdtv, (42" 1080p) using first using hdmi and then using a flat screen cord with a vga adapter, both gave no signal. everything is getting power, but just no video is getting pushed. the things that concerns me is there is no beep from the bios when i turn it on. everthing is getting power and drives are spinning.

this is the build that i have.
GPU: GIGABYTE GV-R587UD-1GD Radeon HD 5870
MOBO: GIGABYTE GA-P67A-UD3-B3
CPU: Intel i5 2500k
Mem: Kingston HyperX 8GB 2x4
Power:Rosewill RV2-700 700W

I thank anyone that can offer some help in this. I've tried a few things. Tried one stick of ram, no stinks of ram (which also did not produce a beep) and tried unplugging everything. I havent been able so swap parts because I don't have any spares.

More about : build boot

a c 178 V Motherboard
April 3, 2011 1:18:29 AM

Please don't take this wrong if it's not applicable, but the very first thing I must ask is - did you hook up a motherboard speaker to your front panel connector - the one with the power switch & LED, as well as the drive indicator LED? I ask as many people assume the BIOS' diagnostic 'beeps' will come through their fancy Altec Lansing 6.1 set-up, but the boot diagnostic is a seperate item; most boards (all GBs, so far as I know, included...), and most cases no longer include them. I have written NewEgg twice about carrying them - you look up 'motherboard accesories', you find some ditzy fluorescent slot covers, but no speakers. I list this one in the 'sticky', but if one whines around a local service shop, they likely have a pile of 'em to spare.

Other thing I can point out that is often neglected is to be sure that your 2x2 or 2x4 CPU power plug is in - thet're not optional - and that you've also supplied power as required to the video card...


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a c 156 V Motherboard
April 3, 2011 1:36:19 AM

Work systematically through our standard checklist and troubleshooting thread:
http://www.tomshardware.com/forum/261145-31-read-postin...
I mean work through, not just read over it. We spent a lot of time on this. It should find most of the problems.

If not, continue.
The following is an expansion of my troubleshooting tips in the breadboarding link in the "Cannot boot" thread.

I have tested the following beep patterns on Gigabyte, eVGA, and ECS motherboards. Other BIOS' may be different, but they all use a single short beep for a successful POST.

Breadboard - that will help isolate any kind of case problem you might have.
http://www.tomshardware.com/forum/262730-31-breadboardi...

Breadboard with just motherboard, CPU & HSF, case speaker, and PSU.

Make sure you plug the CPU power cable in. The system will not boot without it.

I always breadboard a new build. It takes only a few minutes, and you know you are putting good parts in the case once you are finished.

You can turn on the PC by momentarily shorting the two pins that the case power switch goes to. You should hear a series of long, single beeps indicating memory problems. Silence indicates a problem with (in most likely order) the PSU, motherboard, or CPU. Remember, at this time, you do not have a graphics card installed so the load on your PSU will be reduced.

If no beeps:
Running fans and drives and motherboard LED's do not necessarily indicate a good PSU. In the absence of a single short beep, they also do not indicate that the system is booting.

At this point, you can sort of check the PSU. Try to borrow a known good PSU of around 550 - 600 watts. That will power just about any system with a single GPU. If you cannot do that, use a DMM to measure the voltages. Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. Tolerances are +/- 5% except for the -12 volts which is +/- 10%. If you have a white wire (many modern PSU's do not), it should be -5 volts.

The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.

You can turn on the PSU by completely disconnecting the PSU and using a paperclip or jumper wire to short the green wire to one of the neighboring black wires.
http://www.youtube.com/watch?v=5FWXgQSokF4&feature=yout...

A way that might be easier is to use the main power plug. Working from the back of the plug where the wires come out, use a bare paperclip to short between the green wire and one of the neighboring black wires. That will do the same thing with an installed PSU. It is also an easy way to bypass a questionable case power switch.

This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead. Then repeat the checks with the PSU plugged into the computer to put a load on the PSU.

If the system beeps:
If it looks like the PSU is good, install a memory stick. Boot. Beep pattern should change to one long and several short beeps indicating a missing graphics card.

Silence, long single beeps, or series of short beeps indicate a problem with the memory. If you get short beeps verify that the memory is in the appropriate motherboard slots.

Insert the video card and connect any necessary PCIe power connectors. Boot. At this point, the system should POST successfully (a single short beep). Notice that you do not need keyboard, mouse, monitor, or drives to successfully POST.
At this point, if the system doesn't work, it's either the video card or an inadequate PSU. Or rarely - the motherboard's PCIe interface.

Now start connecting the rest of the devices starting with the monitor, then keyboard and mouse, then the rest of the devices, testing after each step. It's possible that you can pass the POST with a defective video card. The POST routines can only check the video interface. It cannot check the internal parts of the video card.
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April 3, 2011 2:27:50 AM

Ok. So I did all that and still no beeps. But when I plug everything in everything spins up, drives and fans and what not. SOS does that mean the motherboard is faulty?
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