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Building System, No Warning Beeps/Video Signal


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#1
hyrdogenmonoxide

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Hello, I'm building my system around a

ASUS M4A785TD-M EVO AM3 AMD 785G HDMI Micro ATX AMD Motherboard > Its giving me no beeps, originally it beeped erratically it was taken apart until the CPU was removed w/ a bent pin. It has since been replaced w/ a new CPU. The fans all run, the light is on, I have a hunch its a bad mobo? I'm unsure though.

There is no video out put or warning sounds. The specs of this system in total are.

CASE XCLIO|A380BK RT
CPU AMD|ATH II X4 620 AM3 R
VGA SAPPHIRE|100284L HD5750 1G R
PSU APEVIA(ASP)|ATX-CW500WP4 RT
2Gx2|GSKILL F3-10666CL8D-4GBRM
HD 750|WD 7K 32M SATA2 WD7501AALS
MNTR ACER|LCD 23" 5MS P235HBMID
DVD ROM LITE-ON|iHDS118-04 18X

Please help.
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#2
rshaffer61

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Disconnect everything from the Motherboard except
  • keyboard
  • mouse
  • video output
  • 20+4 powercable
  • 4/8 pin 12v wire both coming from the powersupply,
  • Cpu fan wire
  • power and reset button to the case
  • case speaker
Now you should have NOTHING connected to the motherboard except what was listed above.

The goal here is just to test the mobo:

If the computer still will not boot up the please remove the motherboard from the computer along with the power supply

place the motherboard on a piece of card board larger than the motherboard,

this will eliminate a short from the mobo to the case which could be a possibility
Install the cpu with, 1 stick ram in dimm 1, power supply, case switch and case speaker
Connect ps2 mouse and keyboard along with the monitor
Repeat the above and power on
If the computer now boots into bios you most likely had a case short so make sure when installing the motherboard in the case that you use standoffs,
and they line up with the mounting holes in the motherboard and none of the standoffs touch anything else on the underside of the board.


Thanks to Cbarnard for these instructions
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#3
hyrdogenmonoxide

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Thank you, Everything was up and running even got video output and it to post... My little brother turned the power on and off and now we have no post again.... time to start over
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#4
hyrdogenmonoxide

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Rebuilding on antistatic bag, got green LED light on board to light up, this did not occur earlier, resetting cmos will let you now...
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