Blue dot lines on the screen and machine is stuck at apple logo.
I have a 2019 27" iMac, the model no. is A2115.
Now it has blue dot lines on the screen and it is stuck at the apple logo when being turned on. Is it worth of reparing?
Looks like failing hardware.
Try a Safe mode start: Start up your Mac in safe mode - Apple Support
Being six or seven years old and of the previous processor architecture, and not supported by newer macOS, hardware repairs seem ill-advised, absent circumstances such as some important local apps that still require intel x86-64.