Failure after RAM upgrade

[Ck2991]

Following on from a previous post I attempted a RAM upgrade (followed the advice about correct compatibility accordingly) . Unfortunately I didn't take note of just how fragile the HP all in one systems can be, according to all the similar posts on here. 

The PC will no longer turn on I just get the error code of x 3 long beeps x 2. 

I've followed the basic steps to resolve such as removing power/hard reset. 

I'm about done tinkering myself, I shouldn't have attempted it in the first place. It was more the fact I don't drive so dragging the unit to a repair shop would have been a bit of a hassle. 

Is this a lost cause/major fault? Or could the right hands bring the PC back to life.

Thank you in advance. 

[resistencia]

Hi @Ck2991 

This LED failure indicates that the memory is not compatible or is damaged, I recommend you to remove the new memory you bought and test if it works.

[Ck2991]

Thank you for the reply and advice. Apologies I should have stated I did remove the new and reinstalled the original as part of my troubleshooting. Unfortunately the issue remains. I've also tried to insure it's seated correctly.

[resistencia]

try to clean the slots with dust-free air, I hope the slot is not damaged, swap the memory between slots.

[Ck2991]

Thank you I've just used my lens cleaning tools for my photography equipment to give everything a proper "clean" but unfortunately the issue remains. Thanks again.

[resistencia]

it may be that the slot is damaged, that led error as I indicated is a memory error.