Fan is running fast after installing new ssd

Thanks Dan, much appreciated.

Nuts, the D key results in a white screen, nothing more happens... even waiting for more than 1 minute. I tried option + D, but after showing a promising Internet icon it switched to a black screen and message "Can't load 'EFI/Drivers/TestSupport.efi', screen shot attached.

/Users/kevinmcgee/Downloads/IMG-0678.JPG

Ok this was my 1st attempt at opening an iMac... it didn't go too well I'm afraid, I embarrassingly, cracked the screen, hairline but pretty large, lower right side. TBH I can live with this for another year until I save for a newer iMac.

I do have a spare older early 2011 iMac (old thicker chassis EMC 2429), if I've blown it with the above, do I have any options of installing the SSD I purchased or swap the screen?

Kev

Sounds like your display damage is the source of the problem ;-{

Which could be why the system is racing the fan.

As far as diagnostics Apple messed up the systems firmware (EFI) which is why diagnostics failed you.

Thanks Dan, oh well... we win some, we lose some... 8 yrs is a pretty decent outcome. It still works, and fast, I’ll turn up Spotify a notch and see how long it survives! Thanks for your help, kudos.