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New build wont even POST (Nothing on Display) Who's the culprit?

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December 30, 2010 3:55:28 AM

Just recently I finally built my new PC (first time building) and nothing is coming up on my perfectly fine monitor. I also hear 3 normal (not rapid) beeping sounds. Same beeping sequence occurs even if I remove all (2) RAM sticks.

My manual does not even mention any beeping codes or even google. I noticed that when I unplug my CPU power cable there's no beeping but I'm sure it can't be the CPU.

All the fans are running perfectly and my motherboard lights are on. I tried reseating my GPU, CPU (they're seated perfectly) and I also tried moving 2 RAM sticks to different locations many many times out of 4 available slots, trying with one stick of RAM etc. I tried clearing CMOS several times

This is my build:



OCZ Signature 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model OCZ3SR1333LV4GK

OCZ ModXStream Pro OCZ700MXSP 700W ATX12V V2.2 / EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC ...

AMD Athlon II X4 640 Propus 3.0GHz Socket AM3 95W Quad-Core Desktop Processor

870-G45 AM3 AMD 770 ATX AMD Motherboard

MSI N460GTX CYCLONE 1GD5/OC GeForce GTX 460 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

Could it possibly be that the RAM is incompatible with my board? The RAM I purchased is not listed in the "Tested RAM" list on MSIs website and I think it's to powerful? I don't have any spare RAM sticks unfortunately.

I'm trying to find out which is causing the problem so I can RMA it accordingly.

MSI support is a joke, I don't think they know anything.

They didn't tell me what the beeps meant nor the problem might be:


What also widened who might be the problem is the reviews on the PSU I bought (700W):

Above are people describing the exact same symptoms as me.

Could it be the PSU?


I really need to know as I only have a few days to RMA a component.

Thanks in advance

P.S I already attempted the steps listed here: http://www.tomshardware.co.uk/forum/261145-13-perform-s...
December 30, 2010 6:05:20 AM

bump I really need a resolution ASAP
a c 122 B Homebuilt system
December 30, 2010 6:17:38 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.

I have tested the following beep patterns on Gigabyte, eVGA, and ECS motherboards. Other BIOS' may be different.

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%.

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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December 30, 2010 6:47:31 AM

Yeah as I said above I've actually done the steps in that thread and the steps you listed.
December 30, 2010 8:05:22 AM

EDIT: Ok guys, I finally fixed it, I had to push the RAM extra hard. Now the monitor picks up a display and I get 1 beep, but now there's just a blinking cursor on the top left of the blank screen, what do I do?
December 30, 2010 8:09:17 AM

Check that the HDD is connected properly.
December 30, 2010 8:32:28 AM

I haven't connected my HDD.

But I can't even POST. I don't get the POST screen just that blank screen so it shouldn't matter
a b B Homebuilt system
December 30, 2010 10:53:12 AM

Drop to a single stick of RAM in a slot that requires it....

Ensure you video card if seated fully, and has it's aux power input; on new mianboards, seating the video card can take some effort, just like the RAM.

FInd BIOS rest button/switch or jumper.....push it once, then power cycle....

A single cursor (no BIOS, self test, etc..) would seem more like the video card to me...

If you completely remove the video card, the mb should beep furiously about not finding a video adapter, which is a sign of life...
December 31, 2010 6:26:44 AM

Issue resolved.

System POSTed before the monitor even initialized, heh.
!