Laptop won't boot. Keyboard and charging LED still work.

Daynia

Hello,

I unscrewed my Acer Aspire 5 A515-54G-56XE yesterday to remove dirt and renew thermal paste. Unfortunately afterwards  the laptop does not turn on anymore. When I press the power button, the keyboard led lights up briefly and nothing happens. The charging LED also lights up when I connect the notebook to the power supply. What I've been trying to do: Take the battery out and put it back in, let it recharge completely once or until the LED shows blue which normally means full, put mainboard battery off and on. Would be great if anyone had any idea why this is no longer working. Thanks

JackE

Did you first disconnect the battery from the mainboard before you tried to repaste the heat sinks to the CPU/GPU and GPU? Jack E/NJ

StevenGen

Daynia said:

Hello,

I unscrewed my Acer Aspire 5 A515-54G-56XE yesterday to remove dirt and renew thermal paste. Unfortunately afterwards  the laptop does not turn on anymore. When I press the power button, the keyboard led lights up briefly and nothing happens. The charging LED also lights up when I connect the notebook to the power supply. What I've been trying to do: Take the battery out and put it back in, let it recharge completely once or until the LED shows blue which normally means full, put mainboard battery off and on. Would be great if anyone had any idea why this is no longer working. Thanks

You must have missed and/or didn’t connect a wire. Open the Aspire 5 A515-54G up again and see if you haven’t missed any connections of plugs when you reassembled the laptop, also this could be related to HDD not being plugged in correctly, inspect these aspects of your reassembly, as that is the only reason why this laptop is malfunctioning if it worked before! Unless? You didn’t damage any mainboard connections and/or broken any wires?  Have a look at the caption below and that section of the Aspire 5 A515-54G and especially see if the HDD plug is plugged in correctly also check RAM if its not lose in its slot.  

Daynia

JackE said:

Did you first disconnect the battery from the mainboard before you tried to repaste the heat sinks to the CPU/GPU and GPU? Jack E/NJ

I am not entirely sure if i did but I think so. Can that damage the mainboard?

StevenGen said:

Daynia said:

Hello,

I unscrewed my Acer Aspire 5 A515-54G-56XE yesterday to remove dirt and renew thermal paste. Unfortunately afterwards  the laptop does not turn on anymore. When I press the power button, the keyboard led lights up briefly and nothing happens. The charging LED also lights up when I connect the notebook to the power supply. What I've been trying to do: Take the battery out and put it back in, let it recharge completely once or until the LED shows blue which normally means full, put mainboard battery off and on. Would be great if anyone had any idea why this is no longer working. Thanks

You must have missed and/or didn’t connect a wire. Open the Aspire 5 A515-54G up again and see if you haven’t missed any connections of plugs when you reassembled the laptop, also this could be related to HDD not being plugged in correctly, inspect these aspects of your reassembly, as that is the only reason why this laptop is malfunctioning if it worked before! Unless? You didn’t damage any mainboard connections and/or broken any wires?  Have a look at the caption below and that section of the Aspire 5 A515-54G and especially see if the HDD plug is plugged in correctly also check RAM if its not lose in its slot.  

I opened it up again and I am pretty sure I missed nothing. 

JackE

>>>Can that damage the mainboard?>>>

Yes depending on what connectors you had to unplug and re-seat to accomplish the re-pasting. A fan connector probably wouldn't an issue. But another cable or flexible ribbon connector that was in the way of accessing the heat sink might if a conductor trace or wire was live and inadvertently touched a mainboard screw or other ground point. Jack E/NJ

Daynia

Well I only had to disconnect the fan cable and then I had full acess to the heat sink

JackE

(1) Did you wear a grounded wrist strap?

(2) Re-check the fan connector polarity to the mainboard receptacle.

Jack E/NJ