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#41
I'm always reluctant to blame the PSU until every other component has been tested. Glad to hear all is well though and thanks for getting back to us to let us know what the problem was.
I'm always reluctant to blame the PSU until every other component has been tested. Glad to hear all is well though and thanks for getting back to us to let us know what the problem was.
Your +12V rail was way too high. ATX Standards is +/- 5%. Your +12V rail was way above that. I'm not sure how I missed the post, but I guess I did.
Hmm well I hate to say but did ask about the PSU in post #37 and as a matter of interest the PSU is nearly always the first thing I head for as Scott Mueller (for those who do not know of him a great authourity on computer building and computing) once quoted in his build books that the PSU is very nearly always the actual problem. You can find his exact wording in the link below. As he so rightly says the power supply is one of the most important components and in my tiny mind probably THE most important because without power nothing is going to work - unless you peddle very fast LOL!!
I do have my little ditty on this subject as you are all probably painfully aware and we may have got this sorted sooner, and I have pics of the section within the program to be used that will sort out desktop (PSU's) and laptop battery levels.
As essenbe has very correctly stated all rails must be within 5% +/- of the stated voltage or the machine will either not start at all (because the self test circuitry in the PSU itself will not give the go ahead at pin 8 on the 24 pin board socket for the CPU to even fire up) or will malfunction. So we are talking here of very finme tolerances and I am sure those who play around with over clocking will know that tiny voltage changes will affect the performance of the parts being overclocked,
For those who are interested this is the link which I think is worth keeping in mind.
Power Supply 101: A Reference Of Specifications - Power Supplies (section 2)
Rant / gripe over