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Which is faulty, mobo or CPU

post #1 of 8
Thread Starter 
OK, I had to pull the mobo and CPU out a while ago as it was terribly unstable, so I need a little advice, or more, confirming my suspicions.

It is an Asrock mobo (the one with the 'safe' clocking facility) and a P4 2.8GHz proc (800MHz FSB).

The problem was the CPU was always running very VERY hot, but the mobo had ramped up the VCore on the processor and I could find no way of turning it down. The machine would give BSOD very regular.

Now, I am thinking that the MOBO had gone faulty, and the CPU might still be ok, what are your thoughts.

I hadn't overclocked the machine either.
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post #2 of 8
Well ASROCK motherboards are horrible for overclocking Period really in my experience. The safe overclocking feature isnt all that great as you cant set the increments of your V-core thus it will automatically raise it according to the higher FSB which can cause issues such as the ones you are having. Now increased V-CORE can damage a CPU however im willing to be its ok. I would drop any overclock you have for safety sake and see how you go. I f you still get issues test your CPU in another motherboard if possible.
post #3 of 8
Thread Starter 
Thing is, I never overclocked it in the first place, it just started to become 'unstable' so I investigated all parameters. Guess I will have to chuck a new mobo at it, and hope, be cheaper than chucking a new P4 at it.
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post #4 of 8
Well sudden instability can point towards bad RAM and or bad CPU. I would run memtest on your RAM to make sure its ok. Also update your motherboards BIOS to the latest version.

Memtest :http://www.memtest86.com/
post #5 of 8
Thread Starter 
Yeah, I did all that, I flashed the bios, that didn't work, I tried different RAM, which didn't work (but works in my current SMD setup). I am not sure how sudden it was, but I just started getting little errors, and you know what Windows is like, it just compounds itself.

I think I have convinced myself the ASrock mobo is at fault, as it just decided to ramp up the core Voltage to (if I remember) 1.54v which would account probably for the rather toasty CPE.

So, where can I get a cheap LG775 socket 800FSB mobo from??
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post #6 of 8
Are you sure your heat sink is on correctly?
    
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post #7 of 8
I take it you are running DDR2 memory with a 2.8GHz Prescott CPU.

If you download this app and post a screenshot of the CPU/memory tab it will confirm what you have.

If this is the case you could get something like this: Asus P5LD2 SE i945P PCI-E for only £68 and it supports Core2Duo for later upgrades.

Not sure about overclocking on this board though.
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post #8 of 8
Thread Starter 
no, DDR400, as it is 18 months old and only supports DDR400, system is dismantled, I tried re-seating the CPU on new AS5, to no joy, I ended up rebuilding the system on an AMD CPU as wasn't to happy with the P4 performance, the AMD just feels faster, and with the system crashing, I was at risk of losing too much data.

So, the more I discuss it, the more I do think it was the mobo, as even on trying to install XP, it would BSOD.

Oh, and I just want as cheap as poss mobo, as this is now being demoted to my workroom, to replace an Athlon 950, so cheap as chips.
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