Hi my name is ***** ***** I will be the expert working with you today to help and resolve the problem you have posted.
I am sorry to hear that you are having such trouble. I will try my best to help you out and resolve the problem as quick as possible.
let me know when you are ready.
unplug the monitor cable from the computer as well as monitor back and then reconnect it, make sure its connected properly and then power on the pc.
No keyboard or mouse or any external device must be connected to the computer.
let me know if you get anything on the screen.
do you get "no signal" on the monitor?
That means the monitor is good and there is a problem with the cpu box.
To investigate further and identify the root cause we will have to open the side cover let me know if that is fine with you if you have opened a cpu earlier.
Please note: The is a risk of shock hazard let me know if you are comfortable.
I want you to remove the side panel cover and when you do that unplug the power cable from the computer.
remove the RAM must be vertically installed
Ram is this the one you took out?
now connect only the power cable to the cpu box and power on the pc and let me know if you hear any beep.
When there is not RAM install the motheboard should beep with 3 long beep codes.
Motherboard fails when RAM is not detected with no beep codes.
you will have to get the motherboard repaired or replace.
The motherboard is not receiving any power from the smps in that case when you power it on do you hear smps fan moves or the fan on the motherboard moves?
The fan starts and stops in few seconds correct?
Sorry to say but the Problem identified is the mother board which has a problem you need to get it repaired or replace.
Hardware issue can be diagnosed and identified however it cannot be fixed till its repaired.
I hope you understand.
I hope I’ve provided the information you were seeking. If you have any question feel free to ask. Please provide a rating for the service and effort.Thank you