Click here for important information about

brand new custom build no Beep no POST on power up

August 10, 2013 at 11:44:19
Specs: windows xp
I just got a new computer setup. new motherboard, new processor, new video card, new power supply, new cpu fan. I've replaced the motherboard, the CPU; i have breadboxed it and know it is not shorting on the case. The system and CPU fans start on power-up and run for 10-15 seconds before stopping and restarting. no monitor signals, no beeps, and this will continue from as long as i leave the computer running.

Intel Core i3-3220
Gigabyte GA-H61M-HD2 Micro-ATX
Sapphire 100358L Radeon HD 7770 GHz Edition 1GB
Corsair CX500M 500w

I beseech thee, oh internet gods.

message edited by Wileylikedatcoyote

See More: brand new custom build no Beep no POST on power up

August 10, 2013 at 11:52:19
Sounds like the CPU might be overheating.

Dis you install the heat-sink and fan correctly?

Did the heat sink come with the CPU or bought separate?

If the heat-sink came with the CPU it would have had a silicone pad attached to it but you first must remove the protective transparent plastic cover for it to work properly.

If it came separately you would need to use silicone grease between the heat-sink and CPU installed to the manufactures instructions.


message edited by StuartS

Report •

August 10, 2013 at 11:59:24
That board has video on it. Have you tried the onboard video while the sapphire card is off the boardto see if it posts?

What kind of Ram are you using? How many sticks and in what configuration?

I personally don't think over heating if you can't get it to post. I've gotten post with no cpu fan, it doesn't instant overheat.. But always a good idea after you get post to monitor it to ensure thermal paste and everything was done properly.

Report •

August 10, 2013 at 12:10:51
THat happened but i then fixed it and applied the thermal paste. so why is it still overheating? and to the second poster, im using some cheap knockoff 1gb cards. Hynix, is the brand. but I didnt think Ram could keep it from posting. if it can then that's probably it..

message edited by Wileylikedatcoyote

Report •

Related Solutions

August 10, 2013 at 12:21:52
I've gotten post with no cpu fan, it doesn't instant overheat

No it wont if the heat sink is absorbing heat from the CPU. If the heat sink is not doing its job then the CPU will overheat in seconds, never mind about the the fan. The fan is there to dissipate the heat from the heat sink. The heat sink itself can absorb a lot of heat before it gets overheated providing it has good thermal contact with the CPU.

Most motherboards will refuse to boot simply by unplugging the CPU as fan. The BIOS detects the absence of a signal from the CPU fan and refuses to go on.

If it were a video or memory problem you would get error beeps to that effect.


Report •

August 10, 2013 at 12:58:04
So you originally ran the rig with NO thermal paste or pad?

Did you read HOW to apply the thermal paste once you got some?

Report •

August 10, 2013 at 14:34:48
I don't know what you mean by "breadboxed" but you should have bench tested before installing everything in the case. The CPU has integrated graphics so that's what you should be using initially & from what I can tell, the board doesn't have a piezo speaker so a separate speaker would need to be connected to hear any beep codes. Also, the thermal paste MUST be applied properly. If you spread it on like frosting, the CPU will overheat. The Core i3 uses the vertical line method:

Report •

August 10, 2013 at 17:06:41
Note: Bench testing recommendation:
Note as stated above, if the MB includes graphics, then do bench test without video card initially. If/when it posts, you can add the card and retest it.
You need to start with the very minimal basics so that there are far less parts that can be causing the problem and retesting when each item is added so you know what the cause it (such as a bad memory stick, hard drive, graphics card, or possibly even a bad motherboard).

You have to be a little bit crazy to keep you from going insane.

Report •

August 11, 2013 at 09:33:12
RAM can absolutely stop you from being able to POST. What kind of RAM do you have in the system?

If you ran the CPU with no thermal paste for a certain amount of time, you may have fried the CPU. If it was only for a second, LIKELY there was no damage, can't say for certain. Now, normally the thermal paste comes on the CPU fan, if you used the stock CPU fan to begin with, then you shouldn't have needed to apply thermal paste. Answers to the questions in #1 and #2 are important answers. If you purchased a third party CPU fan, depending on the model you will need to apply thermal paste.

Like fingers said, go with the bare minimums. Take all the parts out of your case, put the motherboard on the motherboard box with 1 stick of known working RAM that is compatible with the system, the motherboard, the CPU & fan, PSU.. IF you dont get post, shutdown, pull the RAM out, and boot up.. the motherboard should beep. If it doesn't, I would RMA the board, and the CPU.

Report •

August 11, 2013 at 09:47:05
Did you forget to connect the 4-pin ATX 12V power connector? It's next to the DVI connector.

Report •

Ask Question