Turn on cpu and it doesn't boot

Overheating When the CPU overheats then it will shut down (i.e. thermal overload) and won't boot up again until it has cooled down. If this is the problem is not fixed then the CPU will eventually fail.
A faulty fan causes the problem or the fan and heat sink assembly are clogged with dust.
Check the CPU fan to see if it spins freely, if not replace the fan.
If the fan and heat sink is clogged with dust the remove the dust and make sure the vents are clear and dust free. Use a small brush and can of compressed air to do this.

the fan on the CPU working? Try a different power supply the one you have might be faulty

Sounds like the fan has stopped working if fan doesn't turn no air will blow through there is a censer if this gets 2 hot it will shut down so not 2 cause a fire it fails 2 safe the sorliton is a replacement fan motor.

Hope this helps

this is a desktop pc, it sounds like you have a start-up problem, i would pull the ram first and try to boot if it boots okay, put one stick back in at a time to find out which one is bad, if it doesn't boot you may have a bad cpu or motherboard.

If you need further help, reach me via phone at https://www.6ya.com/expert/joel_63c670a84e9f6a97

make sure it's plugged in on the motherboard, if the fan isn't turning on it may have gone bad or the power plug may have gone bad, try a d different plug on the mobo.

If you need further help, reach me via phone at https://www.6ya.com/expert/joel_63c670a84e9f6a97

It appears you have a faulty CPU fan and it is causing the CPU to overheat and shut down.
I suggest you replace the CPU fan. remove any dust from the heatsink and put new heatsink compound on the CPU/heatsink.

If you hear the CPU fan turn on that doesn't mean the CPU itself is working. It can be only that the motherboard is getting power. Check all your connections such as monitor and peripherals and re-connect them. If you still don't get P.O.S.T. or ANY letters or boot options on your screen then your CPU is dead. (unless your monitor is bad)
Another easy diagnostic is using your ears. For example the pitch sound of the fan in some motherboards tends to lower and then increase because it's reading of the hard drive. This means your CPU is ok but either your graphics connection is bad or your monitor is.

hi.
go to this link and it might help find out why.
System won power up but cpu fan is running Solved Closed
or this one.
PC turns on but only fan spins PC doesn boot Google Search

I've almost the same problem. When the system turns on the monitor doesn't sync. After a variable trials with down/up the sync is enabled and the computer starts.A very clear event occurs : when the monitor can''t sync ( and system doesn't boot)you can hear very clear a high fan rotation. When I look/hear in the system the Isuspect the cpu fan. The system boots ( monitor syncs) when the fan rotationgoes from high to low. So the system hangs on an internal check on the rotation speed of the cpu fan.I've googled a lot , but until now doesn't find an answer . Possibilties which I think about : replace cpu fan , clean cpu fun ( but it looks clean).I cannot measure the fan rotation speed when the system is hanging. At normal rotation all info can retrieved witth the program cpu-z.Did you already have a solution ?

i had just solved this problem yesterday, there this symptom below please checked.

1.won't boot after power on button 2.LED on motherboard is light

3.unable to BIOS setting screen 4.CPU fan doesn't work

How to solve

i had just solved this problem yesterday, there this symptom below please checked.

1.won't boot after power on button 2.LED on motherboard is light

3.unable to BIOS setting screen 4.CPU fan doesn't work

How to solve

1.Please find this IC on motherboard EPU asp0800 near the CPU Socket

2.Press the IC with finger,at the same time press the power buttom

(If CPU fan is running on short time please do step 3 )
3.Power on your soldering iron and contact each side of this IC about 3 seconds( soldering iron to contact IC lead left to right or right to left)
4.Review each side of IC and check any short between IC lead5.After step 4 done, power on pc again, if PC booting congratulation

6.Final check: put finger on ic top side surface (don't touch the IC lead)feel the temperature if too hot that's mean short between IC

lead,please rechecked step 4