HELP... motherboard keeps rebooting endlessly... HELP

hello

I have p7p55d e pro , I5 750 . 2X2 1333 KINGSTONE , GTX 470 .

I had to travel with my pc so I took it apart and I carried it in my hand bag to make sure it is safe . when I arrived , I re-installed it again .
Surprisingly , the mother board keeps rebooting for ever and no boot at all , no monitor data , nothing at all , just a short beep .

but the cpu led turns on (red ) just before it restarts , so I thought it's PSU problem (OCZ 600 ) so I bought GIGABYTE 720 , but still the same problem .

I have deleted the cmos using the deleting jumper to reset the bios and still the same problem .

I tried to reinstall my computer out side the case to make sure there is no short and still the same problem .

I have unplugged all cables from the mother board except for cpu able and mother board cable and cpu fan and turned the computer by activating power jumper , but the still the same problem .

I tried to run the system with only one ram , but still the same problem .

THE MOTHER BOARD DOESN'T RESTART ONLY WHEN I UNPLUG THE CPU CABLE , BUT OF COURSE NO BOOT OCCURS .

ANY HELP PLEASE !! MY HEAD IS GONNA EXPLOOOODE

This is exactly my problem .
http://www.youtube.com/watch?v=90Ty8p4Up0A&feature=related

I noticed that the short beep occurs only when I connect the sata port but NO BEEPS at all when I disconnecet it .
Also , I have been overclocking to 3 (not much ) , is this a problem ?...I believe clearing CMOS should reset the default frequency .
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5 answers Last reply
More about help motherboard rebooting endlessly help
  1. It could be that you have mixed the original booting hard drive cable. I recently had this problem too and got it solved by simply switching the boot drive cable a couple time till the system booted well. I thought this couldn't happen on SATA, though... Hope this made any sense.
  2. Actually , I did unplug all sata cables to avoid this problem .
    The motherboard should boot normally with no hard disk .
  3. http://www.tomshardware.co.uk/forum/page-261145_13_0.html
    I have read this link which is very helpful but unfortunately NOT IN MY CASE !! .
  4. GUYS , I noticed that the short beep doesn't occur when I disconnect the SATA POWER CABLE . When I connect it one single beep occurs .

    I tried to run the computer with no rams at all , it gave me the same short beep .
    I expected it to give the no ram beep code but it did not .

    ANY IDEAS PLEEEEEASE !!
  5. ANY HELP GUYS , I AM DYING HERE !!
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