This is not a new build, this is an old PC I've been upgrading for the heck of it.
I know you're all tired of reading this, but I've searched and searched and cannot find a cause. The only thing that could be a possible cause is a dead CPU - I haven't tried to swap it out, but I'm not too eager to try to source a new one. If its dead I will more than likely buy a new MOBO/CPU too ( currently LGA 775 socket, not exactly still in production).
Specs:
MOBO: ABIT I-45C (MicroATX)
CPU: Intel core2duo E8*00 - not sure of the exact revision, and the number is illegible (I've also put it all back together after dismantling it and I'm not too eager to redo it unless I have to. The CPU works with the MOBO as it worked previously and there are no signs of damage/bent pins.)
GPU: ASUS Radeon HD 7770 2GB
PSU: Corsair VS350 (new, also have old 650W off brand that I changed for this one, to test. Both PSUs give same symptoms)
RAM: hyperam 2x2GB DDR2
HDD 1x Seagate 80GB IDE HDD, 1x Seagate 500GB SATA HDD
Cooler- stock
Other Peripherals, DVD RW Drive and live! audio card
It was running fine last night, but powered off by itself during near-idle conditions so I just called it a night. I've had problems with this PC refusing to POST before but they were often fixed by turning it on with the SATA drive disconnected, weird but it worked. I think it had to do with power shortage, thus the new PSU (oddly with less power lol, but I have a strong suspicion that the previous PSU wasn't 650W as stated, even when new and not 10y old as it is now. That aside, it should still do SOMETHING without anything connected, right?)
I've done a breadboard start, or whatever the term is (that seems wrong?) - Removed MOBO, tried to start with only CPU, CPU/RAM, CPU/RAM/GPU, CPU/GPU, hell even without the CPU. All the times the results were the same - All fans spin up, and nothing else. The CPU does not get warm. No beeps (speaker is functional, tested). There is a mild crackling from the internal speaker when the PSU is on but the pc is not.
When starting the PC with the HDDs powered and connected, the 500GB SATA drive spins up and makes audible clicks (cant think of the word for a HDD reading data) - but the IDE drive does not. However, when powered but not connected to the mobo the IDE drive makes the same sound as it did when starting up previously (when the pc worked) - plenty of clicks and hums, as is typical of old HDDs.
Different sticks of RAM in different slots does nothing, and no beeps are present with or without RAM (previously long beeps when no RAM, and short beep on post).
I've taken the mobo out, dusted it, checked for visible damage, no apparent grounding/shorting issues, or other problems.
I'd appreciate any advice that could help me to pinpoint the problem (preferably that hasn't already been posted 100 times, I've read so many threads on this site about similar problems its painful, I've done all of the often first recommended steps like follow the guide thats on the site and read through the PC building guide, I'm already quite experienced with building pcs so nothing new there).
I realise that not having another CPU to swap out is a pain and probably where my issue is, but is there a way I can confirm that without trying it in another PC?
I know you're all tired of reading this, but I've searched and searched and cannot find a cause. The only thing that could be a possible cause is a dead CPU - I haven't tried to swap it out, but I'm not too eager to try to source a new one. If its dead I will more than likely buy a new MOBO/CPU too ( currently LGA 775 socket, not exactly still in production).
Specs:
MOBO: ABIT I-45C (MicroATX)
CPU: Intel core2duo E8*00 - not sure of the exact revision, and the number is illegible (I've also put it all back together after dismantling it and I'm not too eager to redo it unless I have to. The CPU works with the MOBO as it worked previously and there are no signs of damage/bent pins.)
GPU: ASUS Radeon HD 7770 2GB
PSU: Corsair VS350 (new, also have old 650W off brand that I changed for this one, to test. Both PSUs give same symptoms)
RAM: hyperam 2x2GB DDR2
HDD 1x Seagate 80GB IDE HDD, 1x Seagate 500GB SATA HDD
Cooler- stock
Other Peripherals, DVD RW Drive and live! audio card
It was running fine last night, but powered off by itself during near-idle conditions so I just called it a night. I've had problems with this PC refusing to POST before but they were often fixed by turning it on with the SATA drive disconnected, weird but it worked. I think it had to do with power shortage, thus the new PSU (oddly with less power lol, but I have a strong suspicion that the previous PSU wasn't 650W as stated, even when new and not 10y old as it is now. That aside, it should still do SOMETHING without anything connected, right?)
I've done a breadboard start, or whatever the term is (that seems wrong?) - Removed MOBO, tried to start with only CPU, CPU/RAM, CPU/RAM/GPU, CPU/GPU, hell even without the CPU. All the times the results were the same - All fans spin up, and nothing else. The CPU does not get warm. No beeps (speaker is functional, tested). There is a mild crackling from the internal speaker when the PSU is on but the pc is not.
When starting the PC with the HDDs powered and connected, the 500GB SATA drive spins up and makes audible clicks (cant think of the word for a HDD reading data) - but the IDE drive does not. However, when powered but not connected to the mobo the IDE drive makes the same sound as it did when starting up previously (when the pc worked) - plenty of clicks and hums, as is typical of old HDDs.
Different sticks of RAM in different slots does nothing, and no beeps are present with or without RAM (previously long beeps when no RAM, and short beep on post).
I've taken the mobo out, dusted it, checked for visible damage, no apparent grounding/shorting issues, or other problems.
I'd appreciate any advice that could help me to pinpoint the problem (preferably that hasn't already been posted 100 times, I've read so many threads on this site about similar problems its painful, I've done all of the often first recommended steps like follow the guide thats on the site and read through the PC building guide, I'm already quite experienced with building pcs so nothing new there).
I realise that not having another CPU to swap out is a pain and probably where my issue is, but is there a way I can confirm that without trying it in another PC?
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