Continuous beep, PC won't start

Call_Me_Daddy · April 4, 2019

Hi Guys !

I'm building back an old computer. It used to work just fine despite old components.

I used the same CPU, GPU, mobo & RAM, cooler, renewed thermal compound, system fan, case, PSU, HDD

When fired up, it will beep continuously, display nothing, then start over & over (see the video).

Got no clue of what's going wrong.

Internet says continuous beep = RAM problem, tried reinserting, switching slots... But no change even when ram removed. Plus the RAM was working just fine on this mobo 2 months ago on last use.

I tried removing component per component, connector per connector but nothing changes.

Side note : Realized afterwards that the 24 pin wasn't correctly installed (the 4 last ones were spread out and not inserted correctly. Corrected but no change.

Dioneyesos · April 4, 2019

To me the sound sounds like some kind of alarm. and not an continuous beep. If it was it would be one long beep and not a lot of beeps really close to one another. Something that comes to mind when I hear it is either a wrong power cable, wrong voltage perhaps. Could you try using a different PSU to make sure that's not an issue, also make sure you put the power connectors on the right way. I've seen people put them on the upside down.

What also could be a possibility is that one or more pins in the cpu socket are bent or broken. This should be easy to confirm. If there are some bent, you could try bending them back but be careful because they break quite easily.

Call_Me_Daddy · April 4, 2019

13 minutes ago, Dioneyesos said:

To me the sound sounds like some kind of alarm. and not an continuous beep. If it was it would be one long beep and not a lot of beeps really close to one another. Something that comes to mind when I hear it is either a wrong power cable, wrong voltage perhaps. Could you try using a different PSU to make sure that's not an issue, also make sure you put the power connectors on the right way. I've seen people put them on the upside down.

What also could be a possibility is that one or more pins in the cpu socket are bent or broken. This should be easy to confirm. If there are some bent, you could try bending them back but be careful because they break quite easily.

Thanks ! I’ll give this a look ASAP ! I didn’t think it could be something else than a long beep !

The CPU problem sounds less likely to be the reason because I only removed the cooler and other than for replacing the thermal compound Nothing was ever removed, and the cpu was never removed either since the last time and it was working just fine

Dioneyesos · April 4, 2019

Just now, Insorior said:

Thanks ! I’ll give this a look ASAP !

The CPU problem sounds less likely to be the reason because I only removed the cooler and other than for replacing the thermal compound Nothing was ever removed, and the cpu was never removed either since the last time and it was working just fine

Yea that would kinda rule out the cpu, I would check anyway it's not that much work and could save your day. Let me know when you have tried it, kinda curious what the result is.

Call_Me_Daddy · April 4, 2019

23 minutes ago, Dioneyesos said:

Yea that would kinda rule out the cpu, I would check anyway it's not that much work and could save your day. Let me know when you have tried it, kinda curious what the result is.

I just checked.

the 24 pin and pcie are correctly inserted.

however, the cpu power cable looks weird ! Look at the pins shapes, they are not the same order on the cable and on the connector.

Is that common ? Could it cause the problem ?

Dioneyesos · April 5, 2019

Yea that could definitely cause problems. The pins have to be in a specific order to work correctly, if the order is wrong it probably doesn't work. Try finding a psu that has the right connector on is, you could try runnen them both on the same system if you only plug in cpu power to the other psu and bridge the green and black cables in the 24 pin of the second psu.