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HP Recommended

Hi,

 

So, I have an HP Pavilion P6 desktop that won't power on. The green light on the PSU is solid so there is power going to the system and the power button is fine. 

I have tried the resets but this has made to difference. All internal cables have been checked and are fine.

Is there anything else I can try or any idea on what needs replacing.

Again, as I have a solid green light I assume the PSU is absolutely fine?

 

Thanks,

Lee

8 REPLIES 8
HP Recommended

Hello @leeroy221 

 

It would be wise to measure the current (V) applied to the motherboard with a multimeter.

 

Please report your results.

 

best regards

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make it easier for other people to find this type of solution by marking the reply 'Accept as Solution'.

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ub6424_1-1655854870631.png

HP Recommended

Hi,

Unfortunately I don't have a multimeter. Do you have any other suggestions?

Thanks.

HP Recommended

Hello @leeroy221 

 

>All internal cables have been checked and are fine.

The one for switching the computer on, too ? PWR ON connector

 

best regards

---

Dear Community Member, please click the button [ YES ] on "Was this reply helpful?" to say Thanks and

make it easier for other people to find this type of solution by marking the reply ▶️ [ Accept as Solution ] ◀️

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             ⌨️

HP Recommended

Hi,

 

Yes, just double checked, unplugged and plugged them back in and they are fine. 

HP Recommended

Hello @leeroy221 

 

Like I wrote before ...

=> It would be wise to measure the current (V) applied to the motherboard with a multimeter <=

If you can't do that, you're not going to get it running...

 

Please borrow another working power supply to check if there is a defect on the mainboard.

 

best regards

---

Dear Community Member, please click the button [ YES ] on "Was this reply helpful?" to say Thanks and

make it easier for other people to find this type of solution by marking the reply ▶️ [ Accept as Solution ] ◀️

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HP Recommended

Hi,

I have ordered a new PSU, should hopefully come tomorrow. I will let you know how it goes 🙂

HP Recommended

So... I installed the new PSU and had the same fault, constant green power light but the desktop not powering on. Disconnected and tried again, still the same. Disconnected the new PSU and connected the old one back up, tried that again, still the same. Then thought about the motherboard battery, moved that around tried to power but nothing. Put the cover back on the desktop and was going to take to a repair shop. Before I left I thought I best try it one more time after putting the cover back on, low and behold, it powered on. Now though, I get a bios problem on startup so I need to replace the motherboard battery. I am going to make an assumption that the motherboard battery was the problem all the time? Although, as far as I am aware, it wouldn't normally effect the power, just the bios upon startup?

HP Recommended

Hello @leeroy221 

 

Yes, in this case the CMOS battery (CR2032) could be the problem, put in a new one ( has 3V Voltage ! )

 

 

Please report your results

 

best regards

---

Dear Community Member, please click the button [ YES ] on "Was this reply helpful?" to say Thanks and

make it easier for other people to find this type of solution by marking the reply ▶️ [ Accept as Solution ] ◀️

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             ⌨️

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