To provide a complete picture, this is a used notebook which I recently purchased from a local thrift store
Upon installing RAM, and a HDD (with an OS), and switching on AC power, the only the Bluetooth LED light lighted up - all other DID NOT light up, but the screen was black, after a short while, two beeps were heard, and then, the notebook shut off by itself
I then connected it to an external monitor, through the VGA port, the same happened, but this time, I was able to see, on the external monitor, that there was a "Fan Error" message before it shut off by itself
I then disassembled the palm rest and key board to reach the fan to clean it thoroughly. re-started it, but this time, i viewed the fan, which was NOT turning when I switched on AC power. My next attempt, after switching on, and upon hearing the two beeps, was to PRESS ESC key. Indeed, the notebook went past POST, onto Windows, this was seen on the external screen. However, the notebook's screen remained black and blank, and the fan DID NOT run
The first OS, Win 7 PRO, went onto the Windows desktop, but the fan was NOT able to run.
So, I took another HDD, with a Win 10 PRO OS, and re-started the notebook. This time, the fan ran smoothly. However, the notebook's screen remained black and blank
During all of the above, ONLY the Bluetooth LED was lighted, all other LED lights were not lit up. During my last attempt, I managed to view Device Manager, all drivers were installed, WiFi was working, though the WiFi LED was not lit up
This video shows my final attempt: https://drive.google.com/open?id=1krYh1 ... 6QS5fcp2jd
to summarise, the current situation is that the notebook can go into the Windows 10 desktop, the fan now works, BUT ONLY the BlueTooth LED is lighted, and the notebook's screen is black and blank; this photo summarizes the current situation:
https://drive.google.com/open?id=1iA7__ ... y1CyVt1zYC
Please suggest / advise what else should I do to narrow down the root problem(s), and resolve these. Thank you
If I were you, I would give a look at the video cable and the inverter's condition. Something is not quite right with these two culprits, especially the inverter.
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You should also check the fuses around the mobo LCD-connector.
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