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Sony Vaio VPCYB35AG does not POST (turns on but no display)

vaio post boot

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Yesterday it's battery was low so it's LED was blinking, as I was going home already I long pressed the Power button to turn it off. But upon trying to turn it again, only its LED is now turning on, there is no indicator that the harddisk is active (checked the harddisk and it was fine) as it's indicator light is not turning on. I removed everything and reseated everything to no avail. I even tried using another monitor but no, it is not the monitor. 
The green LED of the Power button is turning on but there is no display in the monitor, no post. I am out of ideas on how to solve this. Anyone who have some hints I could try? Even clicking the Assist button does not display anything on the monitor. 
Thank you so much in advance!

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:welcome:   dee-u,


When you tried the external display did you press the Fn and F7 keys to toggle to external display mode, if yes, try removing the RAM then with the RAM removed power up the computer to see if you get any error beeps, guide here to help with removing the RAM, see pages 82 to 84.



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