why won't my computer boot up what the videos show......?

Hi Grif

during the filming of the videos no hard drives were attached to the motherboard; for example if you look at video 2 time frame 20 secs and pause there you will see to the right of the CMOS battery the sata/gsata sockets with nothing attached.

Since making the videos the computer was powered down for a day and low and behold it came back on again and is working, in fact I'm typing this reply from the computer, I suspected that it may have been something to do with overheating so just in case I have put in another two fans. The case now has 6 x fans in total. However after having the computer on for about 45 minutes (with extra fans) it went off as though someone had pulled the power (so maybe nothing to do with overheating I'm now perplexed). When I tried to turn it back on it did the clicking thing again (see videos) and would not get to the first beep. So I left it overnight and again it powered up as normal (so what has changed during 8 hours of inactivity? the only thing i can think of is that it would obviously have cooled down) and i'm using it now and will see how it goes.....maybe I could time how long it will stay on for, are you aware of any diagnostic program that can be ran while it is on to find out what is wrong?

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I would think that the machine still has a fault.

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I've installed core temp so as to see if it's related to the CPU temperature, any other thoughts or advice would be much appreciated.

I've attached a spec list below thanks in advance gigabytemob

P.S. this is not a new build and machine has worked perfectly for a few years; the only recent addition was a new boot HDD as my SSD was too small

Processor 2.85 gigahertz Intel Core i7 930
64 kilobyte primary memory cache
256 kilobyte secondary memory cache
8192 kilobyte tertiary memory cache
64-bit ready

Multi-core (4 total)
Hyper-threaded (8 total)
Main Circuit Board: Gigabyte Technology Co., Ltd. X58A-UD3R
Bus Clock: 133 megahertz
BIOS: Award Software International, Inc. FA 04/20/2010
Memory
Slot 'A0' has 2048 MB
Slot 'A1' has 2048 MB
Slot 'A2' has 2048 MB
Slot 'A3' has 2048 MB
Slot 'A4' has 2048 MB
Slot 'A5' has 2048 MB

continuing on from above once it has shut itself off when i try to boot the computer it will beep and start to boot, then it power cycles and it does this several times with the time getting shorter in the amount of load, each time.

if for example i go into the bios it will sit there for lets say 45 seconds then power cycle get to the bios again and sit there for say about 10 seconds then power cycle and then not run for enough time to get into the bios or anywhere near the OS then it will power cycle and not even give the first beep, which is were the latest video picks thing up from (video 4)

the video shows that "some sort of" frequency is being discharged in to the DVD drive so I power down and disconnect the power from that, then it appears to throw it into the HDD LED so the next power down i remove all the power from all the hard drives, no difference so is it the MOB Processor or what?

hope you can help

...the only way to test whether it's the processor or the motherboard is to start by replacing one or the other.. I'll guess the motherboard, but there's no easy way to go from here..

But since you mentioned "overheating"....

....if it's a heating issue, the easiest and cheapest thing to try first would be to replace the thermal pasted between the processor and heatsink.. If that doesn't fix the issue, the motherboard would be the next replacement in order.

Hope this helps.

Grif