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Lightning strike in an area and PC wont power up -  mother board / PSU or the lot is fried?

Posted on 2009-07-03
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Last Modified: 2013-12-23

Ive yet to see this machine but whats the norm? is there one?
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Question by:worded
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10 Comments
 
LVL 34

Expert Comment

by:jamietoner
ID: 24772931
It could be many things, the 2 most common damaged parts are the power supply and the modem(yes a fried modem will cause no post).
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Author Comment

by:worded
ID: 24775179

I have a power supply checker and its giving me a green light when I switch it on.

The PC starts up by itself when elec plugged in and then powers off.

Im thinking mobo.

Data is ok :-)

Any point swaping power supply?


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Author Comment

by:worded
ID: 24775180


Oh - I removed the modem and it was the same.
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LVL 34

Assisted Solution

by:jamietoner
jamietoner earned 150 total points
ID: 24775196
I don't trust psu checkers as they can't test under load, so if you have a known good one give it a try.
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LVL 10

Accepted Solution

by:
Wolfhere earned 200 total points
ID: 24775223
When you say "starts up" , do you mean you get a post? Can you get into the BIOS? I would replace the power supply regardless. Ram only after you have tried a new 'mobo'. Do you get the correct voltage reading (watts) for the power supply? They are cheap enough you should change that first. Then motherboard, then ram. It is surprising that your HD made it
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Author Comment

by:worded
ID: 24775259

No I hear it start up but no POST.

Was being lazy, will try a new PSU.
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Author Comment

by:worded
ID: 24775276


New PSU - same.

It powers up for 3 mins, powers off.  
The power on/off switch on the PC does nothing ever.  Doesnt power it up or off.

Bad mobo me thinks.
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LVL 12

Assisted Solution

by:naykam
naykam earned 150 total points
ID: 24775304
MoBo replacement..
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LVL 12

Expert Comment

by:naykam
ID: 24775381
Get a surge protector...will save the heartache in the future :D
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Author Comment

by:worded
ID: 24775445


Its a customers machine.  Will sell them one :-)
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