macbook pro dead during catalina upgrade

cisco_lad wrote:

During Catalina installation on my 2018 MCP, the screen went black and computer has since been unresponsive and not drawing any power.

Attempts of restarts, power supply and cable swap or using using battery on its own dont fix the issue.

Prior to the upgrade, the computer has been operating with no issues.

TIA

/Sam

Try the key combinations—

Try resetting NVRAM/PRAM http://support.apple.com/kb/ht1379

Try resetting the SMC https://support.apple.com/en-us/HT201295

cisco_lad wrote:

Thanks !

These were already tried in vain.

I expected there should be power on the mac before they work. There no power drawn by the Mac at the moment, it is completely dead !

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/