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PROBLEM.IS IT MOBO OR PROCESSOR?

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July 16, 2006 1:14:36 AM

i have a 3.0 Ghz LGA775 P4 on a 915g gigabyte motherboard. i started it and it was loading windows xp. at the windows xp startup logo suddenly the monitor went black and cpu turned off. I pressed the power button again but nothing happens not even a beep. I thought it was psu prob but i checked it on another p4 (socket 478) machine and it worked. then i put another psu and now i hear cracking sound from the fan and the power led turns on but dim. nothing appears on the monitor.

which could possibly have prob, mobo or processor? thanks for any help.

More about : problem mobo processor

July 16, 2006 1:50:15 AM

What you may want to do, is pull the memory, and start it up without the memory in... see if it makes any beep codes, in fact pull out everything except for the front panel connectors and the power to the motherboard (no real need to pull it OUT just disconnect it)

If you're getting no beeps at most likely a motherboard...
July 16, 2006 1:52:37 AM

Check your heatsink. Make sure its on securly. Since the PC boots, most likely the processor is overheating.
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July 16, 2006 2:09:24 AM

it's not booting anymore.... that's why he's here asking us for help....
July 16, 2006 2:10:10 AM

the pc does not boot. with the original psu nothing happens. with another psu it gives cracking sound, the power led turns on but dim and nothing happens on monitor. both psu works fine on a p4 socket 478.

the 4 pin atx 12v p4 power cord turns hot however in a second.
July 16, 2006 2:22:58 AM

yeah, but make sure you have some heatsink/CPU thermal compound cleaner (i like the arcti cleaner or whatever it's called) and some Arctic silver 5 so when you do check out everything you can put the cpu back on 8O
July 16, 2006 2:27:03 AM

oh also, i had the same problem (but with an athlon 64) where it did not boot at all! (turned out the motherboard got fried) and then later down the road the CPU died.

So do this: 1. check the CPU or mobo on different parts if at all possible.
2. if above is not possible, RMA your motherboard then when it gets back see if everything works. and if everything does work then you're all good! :lol: 
July 16, 2006 3:03:20 AM

I agree with Sweetpants.
You may want to make sure the MB is NOT grounding to the case. If you haven't already, take out everything and place it all onto a cardboard box. Make sure all UNneccesary hardware is diconnected (only essentials: CPU, HS/F, RAM, GPU, and HDD) and then try to boot it back up.
!