It sounds like you've eliminated everything but the cpu and motherboard...it's unlikely the cpu could make any noise other than a short whine and pop with accompanying smell as it burns out...so the motherboard being defective is the most likely issue.
The board posts though. Even when it makes that sound. And intermittently boots the system. I'll make a video maybe someone will recognise the sound?
It sounds like you've eliminated everything but the cpu and motherboard...it's unlikely the cpu could make any noise other than a short whine and pop with accompanying smell as it burns out...so the motherboard being defective is the most likely issue.
Ok. this is hilarious. I could have sworn my board has no speaker. Apparently it was UNDER the board between the board and the case, - wires connecting to the top. I removed the entire thing. I thought I was losing my mind!! The noises were indeed coming from the speaker. It makes clicking sounds intermittently and whenever it does - I get the "error reading the drive" message. Now. I know it cannot be the Samsung EVO SSD since I swapped it with other drives only to get the same message. And I swapped every other peripheral including RAM. I already cleared CMOS (goodbye overclocking setup) and I still get the same thing. BIOS is doing fine - board boots into BIOS each time - there is a post. It's the OS (Windows 7 64-bit it intermittently fails to load citing "drive error" regardless of which drive I put in it (I already cloned the drive and even tried re-installing only to get the same issue on installation reboot.
Now I really appreciate the help guys, but I honestly think listing every peripheral I swapped in exact order is tedious and frankly, unnecessary to get to the bottom. Not to mention I don't remember the order of swapping correctly to begin with, human memory is nearly half - a confabulation, as I know from my Loftus Studies (I have a Cognitive/Behavioural science educational background).
This is a very old board (GA-890XA-UD3 with AMD Phenom II x4 955 BE CPU. SSD 840 EVO (Samsung). 16 GB Corsair Vengeance (Swapped with Patriot 8 GB, and others at 1600 and 1800 MhZ) and a Corsair 650 Watt modular PSU - way more power than I need. Video card is Radeon 6900 series (then of course I swapped it with two others....
OK. So basically I tried pretty much everything. I read it in another thread on Tom's Hardware that one person found the similar problem occurred because his CPU wasn't seated properly. So... What do you think? The only thing left to try? Makes sense? If it's not that - then what? The board is fried? What's your opinion?