Custom Built PC will turn on, but not post

December 21, 2010 at 21:03:03
Specs: N/A
Hi everyone,

I've built a barebones computer and have run into a problem: it will turn on, but not post. The fans will spin, LEDs turn on, the optical drive opens/closes, and the HDD spins. The PSU is set to 115V. I've removed extraneous parts one by one and tested it, which didn't seem to help at all. I've swapped out displays, power cords and VGA cords with no luck. Parts are as listed:

AMD Phenom X3 8400 2.1Ghz AM2+ CPU
AMD 740G Socket AM2+ Motherboard
450W PSU (came with ATX mid-T case)
Seagate 1TB SATA HDD
Crucial 2048MB DDR2 RAM
Cooler Master AM2 95W CPU fan
LG 22X DVDRW SATA optical drive

I've tried resetting the CMOS but with no luck. Any help would be appreciated, and I'll check in frequently to respond.

EDIT: I did use thermal paste on the CPU/fan as directed in the instructions that came with the CPU, and I followed all instructions that came with the mobo to the tee.


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#1
December 22, 2010 at 02:33:23
Why did u choose OLD HARDWARE? How much did u pay? AM3 boards are cheap + the second generation of phenom and athlon are better than the first generation. U should always BENCHTEST before installing everything into the case.


edit: how to benchtest http://www.techsupportforum.com/har...
AMD 740G + 700SB is a chipset(not a motherboard).
We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


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#2
December 22, 2010 at 18:38:58
Old hardware is cheap. I don't exactly have the cash for a high end system, which is why I bought a BAREBONES KIT for 200 bucks.

I've pulled everything out of the case and tried re-benchtesting (if such a term exists), had the same results. Reseated the RAM, switched RAM slots. I'm stumped.

[I really don't appreciate being browbeaten the first time I ask something. I chose my hardware for reasons that I justified to myself, none of which should worry you.]

EDIT: I don't mean to come off as being harsh. I've had a rough week with this.

The proper motherboard model is A740GM-M.


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#3
December 22, 2010 at 21:10:21
Don't worry i understand.
"same results" fans spinning, leds turn on, hdd spinning e.t.c do u hear any beeps? Do u have a spare psu? If not borrow from a friend and test it with your system.

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


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#4
December 22, 2010 at 21:26:53
Yes, the fans spin, LEDs turn on, I hear the HDD spin, and the DVD drive opens and closes. No beeps, though. I don't have any spare parts except RAM (which I tried testing; no change), and none of my friends will let me borrow a PSU >.< should I go out and buy one?

The thing that bothers me is the lack of beeping. The only thing I can think of doing is reseating the CPU, but I'm not sure I should yet since I have no way of cleaning the thermal grease off the fan and CPU.

I've also tried clearing the CMOS again, to no avail. If it helps any, the heatsink is cold/lukewarm to the touch.


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#5
December 22, 2010 at 23:24:50
It's probably a bad mobo.

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#6
December 22, 2010 at 23:32:57
The mobo is straight out the box; is there a good chance it's a dud?

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#7
December 23, 2010 at 09:08:08
No don't buy another psu, can u test the current psu into another working system? Yes it's possible for a new component to be bad. To be able to hear beeps onboard speaker must be installed, do u have speaker installed into the motherboard? Try to remove all sticks of ram and start the system now what do u hear?

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


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#8
December 23, 2010 at 10:12:04
The onboard speaker is installed correctly, as far as I know. Removing sticks of RAM has no effect on the system. Unfortunately, the only working computer in the house is the netbook I'm currently typing on, ever since the last desktop I bought was dropped down a flight of stairs >.<

Is there any way to surefire know what's causing the trouble without substituting parts? I know, probably no, but it's worth asking. Also, would taking a video of the system turning on help?


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#9
December 23, 2010 at 12:13:59
When u start the system without ram if the board and cpu are ok then the system beeps, if they are not then cpu or board is bad. I suspect the board is bad. U don't have a v-card, your motherboard has onboard video or IGP(intergrated graphics processor) this gpu is stuck with motherboard(NB). Can u return that barebones kit?

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


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#10
December 23, 2010 at 15:02:56
I won't be using it for any gaming at all, thats why I went integrated. I can't return it, got it from Tigerdirect, but the manufacturer warranties are still intact. Should I RMA both the board and the CPU?

I'm not worried about performance- a buddy of mine recommended this kit.


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#11
December 24, 2010 at 23:32:18
I reseated the CPU, this time properly closing the CPU lever >.<

I'm such an IDIOT lol. Thanks for your help!

[close topic please]


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