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On Thursday 20 April 2006 10:15, Tony Sumner wrote: > I've been slow to post recently because so often I find I write in > haste and then find I've said something really stupid. So it goes, but > I'm afraid I need some help with this. I am building a desktop, > starting with a smart new Biostar NF4ST-A9 mobo and Athlon 64 CPU. > I've built several before but not this combination. I put the CPU in, > with two strips of memory, small HDD and a floppy drive and switched > on, just to check that the BIOS was working, and nothing happens. The > pwr and hdd leds come on and the fans go round but nothing else. No > floppy led, no beeps and nothing on the monitor. I've tried with a > different monitor. Also the power switch will not turn it off. What > should happen I think is that the BIOS should test the memeory and > report on the IDE discs. I am not too well up in what goes on at > startup so my question is: does this indicate that the processor is > not working? Is there another possible explanation? If the BIOS is ok > does it need the processor to send out signals via the speaker, the > floppy led and the monitor? Are there some more checks I can do? > > Tony Sumner > > - > The Mailing List for the Devon & Cornwall LUG > Mail majordomo@xxxxxxxxxxxxx with "unsubscribe list" in the > message body to unsubscribe. FAQ: www.dcglug.org.uk/linux_adm/list-faq.html On the 64 bit mobos, there are 2 main PSU to mobo power plugs - one is the long one which is common to all ATX systems, the other is usually a 4 pin one. If the 4 pin one is not plugged in, it will fail to work. On a really new system I helped build a few days ago, there seemed to be nowhere to plug in the 4 pin connector - and as a result, the machine ran as you describe - lights, fans, but no life shown on monitor, no beeps ,,,,, it also failed to turn off.No floppy fitted, so cannot comment on that. Sounds like exactly the same issue. This had a pci express radeon card fitted too - which again lights came on, fans turned - but nothing else. The latest boards have a 6 pin connector socket sat on them - and you need an adaptor unless you have the very latest CPU. I would look at the board and see if you have a 4 pin power connector (grey block type) which is not connected up, or, as mentioned on latest boards, a 6 pin one. I can ask the guy who built it where he got the adapter if it will help - it was only a few quid and from what we thought was a duff graphics card or something, he now has a great PC. Mark - The Mailing List for the Devon & Cornwall LUG Mail majordomo@xxxxxxxxxxxxx with "unsubscribe list" in the message body to unsubscribe. FAQ: www.dcglug.org.uk/linux_adm/list-faq.html