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Studio 1745 Shuts Off During Boot

post #1 of 17
12/24/11 at 1:12pm
Thread Starter 

I have a Studio 1745. During boot it gets to the first splash screen, your hear a click and it shuts off. If you try it repeatedly, it shuts off sooner, if you wait a few minutes between tries it gets further into the boot. I have replaced the motherboard, the memory, removed the hard drive, the optical drive and the wireless card. It still does the same thing. Any ideas?

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post #2 of 17
12/24/11 at 2:50pm
. can you get into BIOS setup?
. have you tried to boot from CD?

cheers ...
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post #3 of 17
12/24/11 at 7:27pm
Thread Starter 

It won't stay powered on that long. It shuts off before the dvd can start up.

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post #4 of 17
12/24/11 at 10:25pm
You replaced the motherboard, what with the CPU?

cheers ...
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post #5 of 17
12/24/11 at 11:31pm
Thread Starter 

No just the board

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post #6 of 17
12/25/11 at 10:22pm
Give the CPU a test then

cheers ...
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post #7 of 17
12/26/11 at 3:05am
Thread Starter 

Is there a way to test it short of swapping it out?

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post #8 of 17
12/26/11 at 9:35am
Not sure about a software type of testing - swapping it out or use it on another working comp is my typical charlatan way of going about it

cheers ...
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post #9 of 17
1/7/12 at 7:13pm
Thread Starter 

Ordered a used processor from ebay. Installed and still hav e same problem. Tried it with every cable disconected save the on/off button wire, still cuts off. I did forget to mention while it's booting it shows a PXE-E61 error with or without the drives connected.

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post #10 of 17
1/7/12 at 9:05pm
The motherboard that you replaced, still under warranty?

cheers ...
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post #11 of 17
1/8/12 at 1:32am
So you replaced almost everything, except battery and charger..
Is battery charged enough?
Is charger working properly?

Since you say that's happens sooner if you inssist with powering up and after few minutes of pause a little bit longer that could be a power problem.
Try to test battery and charger in other laptop and also full charge your battery.
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post #12 of 17
1/8/12 at 6:13am
Thread Starter 

Tried it with just the battery, without the battery, with both and with a charger from another dell. Same deal.

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post #13 of 17
1/8/12 at 12:09pm
That click sound could be from one of many DC-DC converters from motherboard.
Defective motherboard.
But 2 of them with same simptoms?
2 motherboards
2 CPU's
memory and battery,charger tested
Result is the same
Is strange
Fan are working fine?

Try to power up just with motherboard outside of case.
Try to stress them with power on repeated and check if moderboard become warm in some areas.Then identify what are in these area,but this require some skills to repair.
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post #14 of 17
1/13/12 at 8:27am
Thread Starter 

Found out from the guy who originally had it that the first board was completely dead, no start at all. Replaced it with a refurb, had same problem we have now, sent that board back for a replacement, which is the board in it now. I did notice that it looked like he didn't use any thermal paste when he installed the processor. Could that somehow cause damage to the board?

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post #15 of 17
1/14/12 at 10:52pm
Quote:
Originally Posted by billfox3rd View Post

Found out from the guy who originally had it that the first board was completely dead, no start at all. Replaced it with a refurb, had same problem we have now, sent that board back for a replacement, which is the board in it now. I did notice that it looked like he didn't use any thermal paste when he installed the processor. Could that somehow cause damage to the board?

This would fry the CPU (or causing intermittent failure)

cheers ...
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post #16 of 17
1/15/12 at 6:24am
Thread Starter 

Yes, but could that cause damage to the board?

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post #17 of 17
1/15/12 at 9:03am
Hard to say. Any surge in heat would cause damage to any circuitry. Refurbished boards are also hit and miss.

cheers ...
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