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New PC won't start up

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December 22, 2011 4:28:37 PM

Hi, just finished building my new pc and it's refusing to start up.
A few seconds after I power up I start getting 2 short beeps and 1 long one. I've looked it up and it apparently means it's video issue but I've tried starting with and without the graphics card.

Can anyone help? :( 

More about : start

a b U Graphics card
December 22, 2011 4:44:18 PM

Can you list your hardware?

Do you have the power connected to your graphics card? Have you tried the video output from your motherboard? Is the graphics card inserted into the PCIe port all the way? If you can try those out and give any more details that would be great.
December 22, 2011 4:54:40 PM

Did you connect the power to the CPU?
Related resources
December 22, 2011 5:13:42 PM

I've got all the cables plugged in and I've tried using the motherboards video output. Still nothing. :( 

Specs:

ASUS P8H61-M Pro Mobo
Intel i3-2100
Sapphire 6850
2x4GB Vengeance Ram
Antec TruePower 650W
Lite-on DVD RW
500GB Hitachi HDD
a c 105 U Graphics card
December 22, 2011 5:32:01 PM

you have the 4 pin power plugged in up by the processor. /// 'all' hardware is firmly seated ? all plugs/connections are firmly seated ?
a b U Graphics card
December 22, 2011 5:39:59 PM

Time to start the fun...I'd take everything out except the motherboard/cpu/psu and one stick of ram and see if you can get a post. If not try the other stick. If that doesn't work try a different DIMM slot. If you can get a post start adding optical drive, hdd and graphics and see if you can post each time you add something until you get your 2beep 1long message.

December 22, 2011 7:24:12 PM

crewton said:
Time to start the fun...I'd take everything out except the motherboard/cpu/psu and one stick of ram and see if you can get a post. If not try the other stick. If that doesn't work try a different DIMM slot. If you can get a post start adding optical drive, hdd and graphics and see if you can post each time you add something until you get your 2beep 1long message.



Tried all of it, still nothing. :/ 
a b U Graphics card
December 22, 2011 7:54:43 PM

Do you have the standoffs between your case and motherboard in? Otherwise it sounds like you have a dead board.
December 22, 2011 8:08:21 PM

crewton said:
Do you have the standoffs between your case and motherboard in? Otherwise it sounds like you have a dead board.


Yep. Just noticed the DRAM_LED is lit up when I get the beeping noise.
My motherboard manual says it's because my RAM isn't compatible with my motherboard (Really?) and I need press the MemOK! button to start compatibility tuning for a successful boot.

Just don't fancy putting my hand in the case while it's on...
December 22, 2011 8:10:50 PM

It also says it lights up because the RAM isn't installed properly. Pretty sure it is though.
a b U Graphics card
December 22, 2011 8:19:16 PM

Push it in harder until you get the snap. What I like to do is put the teeth out and put hard enough for them to grab the stick of ram and make that nice snap sound.
December 22, 2011 8:21:56 PM

I'll try it. If it doesn't work should I try pressing the MemOK! button?
a b U Graphics card
December 22, 2011 8:32:39 PM

raptor, swifty:
If OP did not have the CPU power cable plugged in, he would not get any beeps.

Gray, everything inside your case is low voltage. If you avoid spinning fan blades and do not casually poke around with metal objects, you will be perfectly safe.

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:

Check for line power at the PSU input. Extension cords, power strips, and power cords do fail.

If you have power and no beeps, suspect components in likely order are PSU, motherboard, and CPU.

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.
December 22, 2011 9:26:20 PM

Guys, thank you very much. It turns it my RAM wasn't pushed all the way in. *Facepalm*
Feel like such a n00b but Windows is loading up now. :D 

Thanks again.
a b U Graphics card
December 23, 2011 11:24:12 AM

Don't worry a lot of people underestimate the amount of force needed for RAM sticks...dang I'm trying to make it sound more Star Warsy
a c 105 U Graphics card
December 24, 2011 4:33:38 AM

Gray92 said:
Guys, thank you very much. It turns it my RAM wasn't pushed all the way in. *Facepalm*
Feel like such a n00b but Windows is loading up now. :D 

Thanks again.


that's what I said up top. what took you so long ?
!