I have a Biostar K8NHA Grand motherboard in my Desktop PC and lately booting has been more problematic and the system will often hang and switch off without shutting down, if it boots at all.Often the power led will go off, even though the PC is still running. I regularly get Floppy Disk fail warnings during the POST. I've tried unplugging various components with little success.At one stage, the onboard network card was not working. Lately after pressing the power switch the system can be unresponsive and then switch on after 10-15 seconds.So, faulty;a) PSUb) Motherboardc) Floppyd) Processore) Other component, if so, which could possible cause this behaviour?Any thoughts?
Hi, suspect PSU.
Though it could be any of the other items mentioned, plus RAM sticks not seated properly or covered in dust! I would check PSU - Floppy (especially cable) - RAM sticks - Processor (possibly overheating/dust clogged) - Mobo .... in that order.
Reseated RAMProcessor reseated with a good clean of fan and removal of dustFloppy cable checkedAll back in - hit the power button and.... nothing. Then, just as I'm banging my head on the desk, it powers up about 20-25 seconds after I last hit the power button.Off to Maplin for a new PSU tomorrow morning.
When you reseated the CPU, did you use Thermal Paste?click here
Also when you go for your new PSU it is a good idea to take the old one with you - you will then be sure that the new one will be the correct type and physical size, maybe a good idea to get a higher wattage too.Good luck anyway.
Those symptoms are characteristic of a dying PSU.
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