HP Pavilion desktop - wondering if motherboard is fried.

HP-Pavilion AW017AV-ABA e9200z running Win7.  AMD Athlon II X4 620 @ 2.60 GHz  4 GB RAM.  

I was working inside this machine, putting in a second hard drive.  Now suddenly when I turn it on all I get is the sound of the fans.  Monitor says there’s no signal coming from the computer.  I took out the video card, removed hard drives, etc.  Still nothing. I’m wondering if I touched something and fried the motherboard.  If I take out all the ram it does start beeping.  When a motherboard’s gone does it still do that?

Alan SilvermanOwnerAsked:
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JohnBusiness Consultant (Owner)Commented:
The BIOS may be running which would explain the beeping.  Try starting in BIOS.  Does that work.

In answer to you question, if you were attaching things under power, yes, you could have shorted something.
Mario EscobarCommented:
Maybe you could moved the ram memories, it's seems to be a ram fail. Take out the ram modules, clean the contacts with a pencil eraser and place it again carefully, and your pc will start!

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Tiborg GuaranaIT beginsCommented:
It could have been graphic card problem. Did you reattach all the cables as it should be? Is your graphic card integrated? If you have additional graphic card, remove it and connect to integrated.
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i would remove all disks, battery, and AC connector
then hold the power button for 20 sec to drain power - then test
otherwise, try removing the bios battery to reset the bios - and test
verify that all connections are ok - and no shorts
i must say, in my experience, i never came across a bad board by handling it the way you describe, but then i' used to it
JohnBusiness Consultant (Owner)Commented:
Alan - did you try the basic tests yet?
Alan SilvermanOwnerAuthor Commented:
It's a bad stick of ram.  Thanks to all for your help.
Alan SilvermanOwnerAuthor Commented:
As far as I can see I can only pick a best solution and then mark everyone else as helpful. Can't I reward partial points any more?  
Why do they keep on screwing around with these interfaces?  It's annoying.
Anyway, thanks again to everyone for your help.
JohnBusiness Consultant (Owner)Commented:
You are very welcome and I was happy to help you.
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