[kradreyals]

Hello, this is a depressing day =(
Anyway, I built this desktop some four months ago and it worked perfectly for both Thanksgiving break and Christmas break. However, I left for college for the last two months and when I came back, it just won't boot.
Note that I powered off everything and unplugged everything outside the case, and put the case to its retail box.
I've already taken out the MOBO and the PSUout of the case and disconnected everything, and I still can't get the it to boot, even with shorting the Power Button. Now, how can I know which is dead? Or is there still hope that neither is?

Thank you.

Asus p7h55 USB3
Thermaltake R2 850W
2GB ADATA RAM

 

[Tyree]

Bench Test
Remove EVERYTHING from the case.
Set the motherboard on a non conductive surface. The motherboard box is perfect for this. DO NOT PLACE THE MOTHERBOARD ON THE STATIC BAG! It can actually conduct electricity!
Install the CPU and heat sink.
Install 1 stick of RAM.
Install the video card and attach the power supply connection(s) to the card if your card needs it.
Connect the monitor to the video card.
Connect the power supply to the motherboard with both the 24pin main ATX Power connection and the separate 4 or 8 pin power connection.
Connect power to the power supply.
Do NOT connect ANYTHING else. Make sure you have the power connector on the CPU fan connected.
Use a small screwdriver to momentarily short the power switch connector on the motherboard. Consult your motherboard manual to find which two pins connect to your case's power switch. Then touch both pins with a screwdriver to complete the circuit and boot the system.

If all is well, it should power up and you should get a display. Then assemble the parts into the case and try again. If the system now fails to boot, you have a short in the case and need to recheck your motherboard standoffs.

If the system does not boot after this process, then you most likely have a faulty component. You'll need to swap parts, start with the power supply, until you determine what is defective

 

[kradreyals]

Here's what I posted on another forum.
I have tried what you told me, and right now, it seems either the PSU or the MB is defective. But I can still hope!

Computer makes no sound at all when trying to power up.

I built it four months ago and it ran perfectly the first time but then I unplugged everything and put the case back in the box with the components inside.
On Christmas, I took it out and booted it just fine, and played to my heart's content for a month. Put the case back again in the box and left.
Spring Break, I come back missing my ******* child and it just won't wake up. =(

Won't boot at all, no sounds, no beeps, no fans turning, no earth shaking, NOTHING.
Only thing I can hear, because I was extra paranoid, is a very low chirping sound coming from the PSU when I turn it on. It sounds electrical in nature, but then again, I can't be sure it wasn't there in the beginning, since it's VERY low.

MOBO: Asus P7H55 USB3
CPU: i5 750 2.66 GHz
GPU: GTX460 1GB EVGA
RAM: 2x2 GB ADATA Gaming Series
PSU: Thermaltake TR2 RX 850W
OS: W7 Ultimate 64bit
Case: Antec 300

Anything else shouldn't matter since...
Things I did:
1. Came home, took out the case, plugged peripherals, plugged PSU, turned it on, pressed Power Button on case. Nothing
2. (I always power off and unplug, and the MOBO's LED is at least on, also, the Turbo Key turns on a red light)
3. Opened case, tried shorting the power button with flat screwdriver and clip. Nothing
4. Took out PSU and connected Green to Black with clip, PSU fan works.
5. Connected PSU to a fan and tried the Green/Black clip thing; both fans work.
6. Tried Breadboarding or benchtesting (Hope they're the same, LOL)
7. Connected PSU to MOBO and added a RAM stick; used case Button and Shorted; nothing.
8. Added GPU, connected to PSU, tried to power it on both ways. Nothing.
9. (Yes, the 4 pin was always in when I tried to turn it on, as well as the 24 pin thing.)

Help me help you help me =(

 

[Tyree]

If no joy when bench testing refer to the last paragraph.
If the system does not boot after this process, then you most likely have a faulty component. You'll need to swap parts, start with the power supply, until you determine what is defective.

 

[kradreyals]

Yeah, seems I narrowed it down to PSU or MB.

I have no equipment to reliably test which one is defective, so I plan on taking it somewhere. Where should it be? I've never gone to tech support before.