When I switch on the computer nothing happens except the fan on the CPU turns over a few times. Based on a previous recommendation from an expert I replaced the PSU but unfortunately I am experiencing exactly the same problem.
What now?
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if the PSU is new, the fan moves/turns over a few.
this tells you that the button works.
the PSU works.
unplug everything and pull out all cards, i would include the video and ram.
turn it on, the MB/cpu fan should go on.
I'm guessing it will not and just do what it is doing now.
Which means your MB is shot.
i just had this problem....it endeed up being a faulty fan on my chipset.....or nf4 chip.....either way...i used a
http://www.tigerdirect.com
it fixed all my problems
b4 i let you go without due diligence what mobo are you using
Here my troubleshooting procedure :
clean the system from dust, then test with the minimum setup - disconnect also all peripherals and network cables :
connect only motherboard + cpu + 1 ram stick, video card, power supply
verify that the 4-pin or 8-pin CPU Aux power plug is connected
on boot, do you have a display?
if NO it is one of the connected, swap ram, Power supply, video card or monitor - leaving only motherboard and cpu
if Yes, add devices till the problem shows
you can also check the motherboard for bad capacitors as shown here : www.badcaps.net
additional tests and things to try :
boot without ram, it should beep; (also, without video card)
try bios default settings,(if possible) or clear the bios by removing AC and bios battery
renew the CPU heatpaste
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by: alienvoicePosted on 2009-10-21 at 21:03:55ID: 25630726
Remove all connections to the motherboard. Everything except the psu connections to the MB and the videocard. When you turn it on, does it beep?