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New HAF 922 wont power up

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October 1, 2010 5:07:52 AM

hi guys i got the haf 922 today and connected everything and it wont power up, motherboard however shows a green light, when i press the power button nothing happens, Help please

More about : haf 922 wont power

a b B Homebuilt system
a b V Motherboard
October 1, 2010 6:01:26 AM

My first guess is that the case's power/reset/LED plugs are connected to the wrong pins on the motherboard's front panel header. Double-check that first.

It's also possible that your motherboard is shorting to the case, or the power switch itself is dead, but ... check the connections first.
Related resources
October 2, 2010 2:06:45 AM

i checked all that on that thread, and t still doesnt work, i tried the green and black wire thing to jump start psu and that also failed, do you think my psu is dead? cause my motherboard light on so im guessing not
a b B Homebuilt system
a b V Motherboard
October 2, 2010 2:22:06 AM

The green light tells you the psu is plugged into the wall, is getting power, and is providing standby to the mobo. Doesn't mean the psu will actually work. The PC not starting up doesn't mean the psu is broken.

Please list your configuration, including make/model of psu.
October 2, 2010 2:26:07 AM

disk drive
hardrive
cooler master 500 watt
ati 5770
amd 955
coolermaster hyper 212+
samsung 4gb ram
asus M4A785-M motherboard
haf 922
a b B Homebuilt system
a b V Motherboard
October 2, 2010 2:35:23 AM

Sorry, I don't do AMD. if someone else doesn't stop by to help, post again but this time include your problem, configuration and the fact that you've been through the checklist.

[If you have another psu, it woul be worth your while to try it.]
October 2, 2010 2:43:12 AM

not to be rude but what does amd have to do with anything?
a b B Homebuilt system
a b V Motherboard
October 2, 2010 2:50:11 AM

Because other than asking if you can swap out the psus, I don't know anything about AMD platform quirks and procedures, and I'd be wasting your time.
October 2, 2010 2:50:51 AM

heres some images if it helps, sorry about camera dont have a good one at the moment...


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a c 122 B Homebuilt system
a c 156 V Motherboard
October 2, 2010 4:15:30 AM

Work 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.

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...

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.

CM PSU's are not known for their stellar build quality.

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 or long single beeps indicate a problem with the memory.

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.

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.
October 2, 2010 4:31:31 AM

yeah it cant pass the shorting test with the green and black wire, i contacted cooler master and requested an exchange for my power supply.
October 3, 2010 4:28:35 AM

ahh i cant find receipt, i ordered a corsair 650, i got it for 62 after all the discounts from newegg, this power supply is better than my previous right? and also, do you guys know why my old one failed?
a b B Homebuilt system
a b V Motherboard
October 3, 2010 4:40:45 AM

It wasn't a good psu, and even quality units have failures.
October 3, 2010 4:54:49 AM

well i hope this solves my problem
a b B Homebuilt system
a c 77 V Motherboard
October 3, 2010 3:18:05 PM

Quote:
Sorry, I don't do AMD. if someone else doesn't stop by to help, post again but this time include your problem, configuration and the fact that you've been through the checklist.

[If you have another psu, it woul be worth your while to try it.]

Lol!!!
I got the logic behind it but I didn't get the logic in writing it down here.....:( 
October 5, 2010 11:36:12 PM

well i got my new psu, and it works, problem is computer wont start, i tried my old motherboard and everything works, im guessing my motherboard died when psu died, and it had anti surge to, god im never buying from coolermaster or asus again. I hope my 5770 didnt die with it. I can use my old motherboard for now until i ship new one in, can i use my am3 with the old am2 motherboard? I have an am2 processor but just saying
a b B Homebuilt system
a c 77 V Motherboard
October 6, 2010 7:32:29 AM

What is the model and make of the AM2 Mobo?
October 6, 2010 6:20:25 PM

nvm that now, the old mobo works outside the case but not inside, can anytjijg causa short? i got standoffs for it, do i put screws on standoffs? Serioisly how can it work outside but not inside, the motherbpard is noticably bent from hardening screws, could this cause a problem?
a b B Homebuilt system
a b V Motherboard
October 6, 2010 6:25:31 PM

The standoffs go into the small holes in the case and the screws go through the screw holes in the motherboard and into the standoffs. I can't imagine you were putting the motherboard in bare...
October 6, 2010 8:47:47 PM

what you mean bare? i actually screwed it so hard its bent in two places, i just didnt put screws on the standoffs, could that cause a short?
October 6, 2010 10:41:46 PM

welleveryjing works now, problem is i cant see anything on screen and mouse, keyboard dont have power. if i listen really closley, i can hear fans give off and come right back up, like instantly, fan led never goes out tho. its a steady beat, like its running then it turns off then on, then off then on, like in 1 millisecond. whats happening?
a b B Homebuilt system
a b V Motherboard
October 7, 2010 2:56:07 AM

blackdragondd11 said:
what you mean bare? i actually screwed it so hard its bent in two places, i just didnt put screws on the standoffs, could that cause a short?
He wanted to know if you put the motherboard in without using the standoffs. Apparently, you did something with standoffs, I dont know about screws, and can't figure out what you bent. So . . .

The standoffs are screwed into the case, the motherboard is placed on top of the standoffs, and a screw must go through the motherboard into EVERY standoff you installed. Otherwise, it WILL short.

Did you do that or not?

If not, what DID you do?

What is bent, where?
a b B Homebuilt system
a b V Motherboard
October 7, 2010 4:20:39 AM

The bottom of the motherboard shouldn't touch the the case; the circuits will short out on the back.

You could have potentially fried something in the board because you shorted it or because you bent it. You also could have broken a circuit or solder by bending it so hard. Like Twoboxer said, a full description of the problem would help out A LOT.
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