MY PC HAS POWER THE FAN WORKS ALSO THE FAN FOR THE CPU BUT WONT BOOT I CANT EVEN GET A SIGNAL TO MONITOR.
I REMOVED POWER TO DVD AND HARD DRIVE AND REMOVED THE RAM, AND AT 1 POINT THE GREEN LIGHT CAME ON AND HAD A LONG BEEP PERIODICALY BUT THAT EVEN STOPPED AFTER A WHILE
This is a clarification request as well as a possible solution... are you using the onboard video, or a video card via pci, agp? because if you are using a new video card or a new motherboard you may have to use the onboard video temporarily to boot up and install drivers for the motherboard, then plug in the video card and it should boot up so you can install the drivers for it.... sometimes this is not the case though, i have had to trick a computer into doing this before which is not a smart idea at all...
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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.
The motherboard is not telling you there is no signal, the monitor is.. In this order:
Test the connection from graphics card to monitor, try a different monitor to eliminate this from the issues.
If other monitor works, the old one is causing the problems
If new monitor does not work:
Check the graphics card is seated properly, if possible, test with another graphics card, if this works, the issue is with the graphics card
If this does not work, check the fan on the cpu, is it spinning? If not, make sure the fan is connected to the motherboard
If the fan is spinning, remove all the ram, reboot, you should get a series of beeps, make note of these and repost them (computer will not boot)
If you get NO beeps with ram removed, the CPU or motherboard are possibly dead, if possible, replace CPU with known working one and retest with and without ram in, make sure you have thermal grease on the CPU>heatsink. Replace the Ram (or one module)
If you get a single beep and the motherboard powers the monitor, the CPU was your issue
If you get no beeps, confirmed death of motherboard.
Possible other solutions: Remove CMOS battery, leave for 1 minute and then replace, see if it boots Check the power switch from the computer front panel is not sticking
check the board for blown capacitors. I have found many boards from power circuits to motherboard with popped capacitors over the past 5 or so years. replace them and tada, it lives again. I've been successful several times with this operation. Please see the picture below for a guide to finding bad caps.
I have the same problem, the CPU fan spins, keyboard lights blink, no start up screen, or bios. But, when I push a few times on the pc reset button, then the CPU fan is becoming still, the keyboard light are out and I can start the computer again in a normal way. Can this one be a temporally solution for you too? Do you have any suggestion about? I guess it can be an electricity dysfunction of a wrong fixed cable.
There could be a number of causes. Do you hear any beeps when the computer starts up?
Try seating all the chips in the motherboard. That means, apply pressure to each individual chip on the motherboard with your finger or thumb. The goal is to make sure each chip is securely attached to the board.
Sometimes, heat or new h/w installs partially "pop" some of the chips out of the motherboard - causing the circuitry to be disconnected...
Buy a dianostics card, and find out if its the RAM, CPU, OR Motherboard.
(sounds like a ram or CPU problem though)
if you have more than one stick of ram in the system, take one out, and power it up, if still not response, to the other stick out, and put the stick you took out the first time, and put it back in.