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Grounding issue


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#1
chucksg

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I have a HP Pavilion P6616F Desktop. I have had nothing but trouble from the day we got it.
This is what has happened after hours of trouble shooting by the HP tech reps.

When I start up the computer, the HP welcome comes on then goes off like it should but then just comes right back. This process repeated itself over and over again and never gets to the windows welcome screen. One of the solutions was a static discharge. I ended up do Everything from doing the static discharge, resetting BIOS to a full system restore and everything in between under the direction of the HP Rep. We ended up sending the computer back the first time in August for a motherboard and the second time in September for a new CPU.

The computer now comes on and boots up, but if I put my arm next to it, the hair on my arm stands up, like static in the unit (one of the same problems I had before).
We now have a dedicated power line for this computer and a good surge protector, but we still have the same problem. It's acting like a grounding issue.

Can I put a ground wire on the case and attach it to a ground to remove the static? I don't want to accidentally send power back into the unit.

Thanks
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#2
phillpower2

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Hi chucksg, sorry to hear that you are having such bad luck with this.
First thing I must ask, is the PC still covered by a warranty because if it is you should return it to prevent voiding the warranty by accident.

The computer now comes on and boots up, but if I put my arm next to it, the hair on my arm stands up, like static in the unit (one of the same problems I had before).

We now have a dedicated power line for this computer and a good surge protector, but we still have the same problem. It's acting like a grounding issue.

Can I put a ground wire on the case and attach it to a ground to remove the static? I don't want to accidentally send power back into the unit.

All of the above point to a power issue and you should not have to deal with this IF the computer is covered by warranty and if the PC is faulty, what you describe is also a health and safety concern, does the issue occur if you use a different wall socket?
For future reference consider purchasing a UPS http://www.newegg.co...N82E16842101381
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#3
chucksg

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Thanks for the reply.

Yes, it happen last time we sent back to HP. Before we got it back this time we put in a dedicated power circuit just for that computer but it didn't help.
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#4
phillpower2

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I suggest that you contact HP again and tell them that you have concerns about possible electrocution or the PC starting a fire, they would be reckless not to at least examine the computer and in particular the PSU and associated wiring.
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#5
zep516

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Hi,

they would be reckless not to at least examine the computer and in particular the PSU and associated wiring.

First of all I agree with phillpower!


Can I put a ground wire on the case and attach it to a ground to remove the static? I don't want to accidentally send power back into the unit.

That circuit should already exist via the power supply plug (computer plug) and the wall outlet.


As you probably already know a ground is used for two purposes: part of a protection system for wiring or circuit faults that mistakenly send real power to the computer's chassis that is accessible to people; and removing static charges and electrical signal noise while they are at low levels, before they build up to troublesome.
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#6
chucksg

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Thanks
I'm going to call HP tomorrow and get this taken care of.
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#7
phillpower2

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Good luck and please let us know how you get on or if you require anything further.
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