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Computer Crashes (Resolved)


Best Answer phillpower2 , 05 November 2014 - 01:52 AM

Any replacement PSU must have an equal or above power output (including amps on the +12V rail) to the present PSU, have the same type of connections and be a good quality brand such as Antec, Corsa... Go to the full post »


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#31
phillpower2

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Speedfan does sometimes show anomalous readings but the +12V rail on the PSU looks to be way too high which can lead to overheating, artifacting and thermal shutdown;

 

Please restart your computer and check the temperatures/voltages in the BIOS, no screenshot is required just make a note of the temperatures and the +3.3V, +5V and the +12V and post them with your next reply.

 

NB: BIOS voltage readings.

The readings are not conclusive in the BIOS as the computer is under the least amount of load, if they are higher or lower than what they should be though it does suggest a PSU problem.


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#32
maddog10

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I've only managed to get it to boot once tonight and in the BIOS it froze, but it did not look like there was an option to look at temperatures. Would replacing the PSU be the next step? is it that simple as swapping a 300w for another 300w?


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#33
phillpower2

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✓  Best Answer

Any replacement PSU must have an equal or above power output (including amps on the +12V rail) to the present PSU, have the same type of connections and be a good quality brand such as Antec, Corsair, EVGA, OCZ or Seasonic, there are other brands that you can trust and if you check out the links in my sig you can see what they are, unknown brands are not to be trusted as they do not deliver what is stamped on them, especially cheap foreign imported PSUs.

 

Excuse the title of the guide, How to Replace Your Desktop PC’s Power Supply


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#34
maddog10

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Ok I think I'm close to giving up on this one. The old pc has a matching power wattage, but has a 20 pin connecter where I need a 24 pin one. It has 2 Sata connecters, but they are not far enough apart so I would need an adaptor. This just became something I will get round to.

 

Is it safe to use 20-24 pin adaptors and ide to sata adaptors for power supplies?

 

Broken PSU has max 18A on the +12v rail, prospective one has 15A so I guess not a match anyway


Edited by maddog10, 05 November 2014 - 03:12 PM.

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#35
phillpower2

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As the computer does not have an add on video card the PSU would have been ok to test the system but not to use long term, due to it not having the correct power connections it is best not to bother with it though I'm afraid, getting the present PSU professionally tested is your best option before purchasing a new one, many tech stores will do this for free but some will charge a small fee, let us know what you decide.


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#36
maddog10

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I'll have a think about it over a long time. Why does the pc not having an add on video card make the psu bad for long term use? How do you close this post down?


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#37
phillpower2

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Add on video card manufacturers stipulate what the minimum output of the PSU must be + how many amps that the PSU needs to produce on the +12V rail, modern bottom end add on video cards will typically require a minimum of 18 amps on the +12V rail so as you do not have an add on video card that requires such power the replacement PSU could be used to test your system as it is but it should not be considered as a permanent replacement, you have optical drives etc that may require more power when in use for example.

 

We do not close tech topics but if you wish the thread to be marked as resolved we will do that and then edit it again should you want to come back to it, you decide then let us know.

 

FWIW: If you take a look at the specs for a 3+ year old GTX 550Ti add on video card you will see that it stipulates that a 400W PSU with 28 amps on the +12V rail is required, see here, hope this helps answer your question.


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#38
maddog10

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Think I'll just leave it open for the time being. Thanks for the help.


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#39
phillpower2

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Not a problem and you are most welcome  :) 


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