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light path on dell optiplex 780

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  • Light
  • Optiplex
  • Dell
  • Components
Last response: in Components
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May 8, 2013 4:37:20 AM

hello all
i have a problem with my dell optiplex 780 n series, all the light pattern was blinking 1,2,3,4 and the fan of psu turn on, but the computer wont booting at all what should i do? i have read the service manual from the site, but there is no explanation for my problem. anyone help?:??: 

More about : light path dell optiplex 780

May 8, 2013 5:20:38 AM

there is no light pattern for all four except that all four will light up once after post 780 service manual on the last page of the doc under error codes you will see all the error light patterns, none of them are for all four lights.

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May 8, 2013 5:45:47 AM

the great randini said:
there is no light pattern for all four except that all four will light up once after post 780 service manual on the last page of the doc under error codes you will see all the error light patterns, none of them are for all four lights.



yes, but it happen to my computer.. all 4 light path turn on and blinking and the computer wont booting
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Related resources
May 8, 2013 6:08:00 AM

the great randini said:
http://www.dell.com/support/troubleshooting/us/en/19/KC...

click the link for how to clear cmos settings, I would start with that.



it would be my first step to start troubleshoot too, but what cant i say... i have replacing memory/psu/hdd/ with the new one, clear the cmos, but the problem still existing all 4 light blinking
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May 8, 2013 7:47:20 AM

hoeeksss said:
the great randini said:
http://www.dell.com/support/troubleshooting/us/en/19/KC...

click the link for how to clear cmos settings, I would start with that.



it would be my first step to start troubleshoot too, but what cant i say... i have replacing memory/psu/hdd/ with the new one, clear the cmos, but the problem still existing all 4 light blinking


If nothing helps and you are about to trash your motherboard try those guys http://delloptiplexrepair.com/ I don't know anything about them, just found them a minute ago.
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May 9, 2013 4:48:59 AM

Kisianik said:
hoeeksss said:
the great randini said:
http://www.dell.com/support/troubleshooting/us/en/19/KC...

click the link for how to clear cmos settings, I would start with that.



it would be my first step to start troubleshoot too, but what cant i say... i have replacing memory/psu/hdd/ with the new one, clear the cmos, but the problem still existing all 4 light blinking


If nothing helps and you are about to trash your motherboard try those guys http://delloptiplexrepair.com/ I don't know anything about them, just found them a minute ago.


it is similiar to the service manual guidance from dell website, anyway thanks for your time to try helping me :) 
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