HP Pavilion G7 - Power On issue

[Dane-Jones]

• When the Power button is pushed, the power button light turns white for about half a second and turns back off.  No other poweron indicators are pressent.  (No Fan, Drive Spin up, ect.)
• The Power Supply Voltages are correct (Tested)
• The above stated symptoms remain with the following scenarios:
  • Battery & AC Supplied Power
  • Battery Removed & AC Supplied Power
  • Battery Only
• When the AC power is supplied, the led indicator next to the port lights up white.  If the battery is installed, it will turn amber to indicate charge and then turns back to white.  This indicates to me that the charging curcuit is likly opperating normally and the battery is at a full charge.
• I have performed multiple power resets.  (Remove all power sources & hold power button for 15-30 seconds)
• I have reseated: RAM, HDD, ODD, all ribbon cables.
• I have perfermed a complete disassembly and visually inspected the MB for signs of circuit failure or environmental damage.  Aside from  a medium build up of dust in the fans, no apparent damage was found as all the solder joins look good and there is no signs of overheating of the ICs or board.
• I have swapped the RAM with known good RAM.

At this point I feel the failure is likly in the CPU or somewhere on the motherboard.  I am hopping for an HP Technical Representative to indicate the most likly point of failure for replacment:  Given the syptoms, I am thinking we start with replacing the CPU before replacing the motherboard.  Do you concure with this assesment and can you provide technical expanation as to why you agree or disagree as I'm basing my next step entirly on intuition at this point.

Thank you for your time.

[The_Fossette]

@Dane-Jones,

Welcome to the HP Forums!

Thank you for posting your query on this forum, it's a great place to find answers.

I reviewed your post and I understand that the computer is not booting to Windows.

Don’t worry, I assure you I will try my best to get this sorted.

Awesome job on diagnosing the issue correctly and performing smart troubleshooting before posting your question on HP forums. Kudos to you on that score. 

From my experience, it looks like a motherboard failure. Usually, this happens when the connector on the motherboard (Which goes from the supply) fails.

I want you to go through below artilce just to make sure that you have performed all the required troubleshooting to isolate this issue.

https://hp.care/2ymhlc5

I recommend you contact HP phone support to check the available service options for your computer.

Here is how you can get in touch with the phone support.

Open link:  https://hp.care/2moMFSc

Enter the Product number or select to autodetects

Scroll down to “Still need help? Complete the form to select your contact options”

Scroll down and click on HP contact options – click on Get phone number.

Let me know how it goes and you have a great day!

If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!

Cheers!

[Dane-Jones]

I have already ordered a replacment CPU as it was the cheaper of the options.  I'll keep the forum up to date as things develop.

[The_Fossette]

@Dane-Jones,

Thank you for keeping me posted.

Please post your results, as I will be looking forward to hearing from you.

Good day!

[Dane-Jones · Accepted solution]

Solved:

After the CPU was replaced, I tested the unit with the minimal devices connected.  No DVD Drive, No Wifi, no HDD.  The system booted as much as it could given the lack of media.   SUCCESS!

I assembled the system completly and performed a final Test.   And things returned to the state it was prior.  So it seams the issue was with one of the ancilary components.   After some trouble shooting it turned out that the WIFI card was the culprit.  

I replaced the WIFI card and the system is working optimally once again.

tl;dr
Remove WIFI Card and Test.  If it Boots, replace WIFI card.

[Jeet_singh]

@Dane-Jones,

It looks like you were interacting with @The_Fossette, but he is out for the day & I'll be glad to help you out, 
I'm the Jeet_Singh & I'm at your service. 

Thank you for keeping us updated,

I'm glad to hear you found the solution you were looking for.

I would suggest you keep the computer under observation and check how it performs.

If you need any further assistance, please don't hesitate to reach out to us again.

We'll be more than glad to assist you.

You've been great to work with and it has been a genuine pleasure interacting with you.
I hope both you and your product works great and remain healthy for a long time 😉

Take care now and do have a fabulous week ahead. 🙂
Regards,