Caret might be a bit more popular than PowerISO. We know about 2 links to it since March 2021 and only 2 links to PowerISO. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You would preferably download the dmg from Apples website here and open it on the ThinkPad and download PowerISO here and follow there official instructions on how to do it. Then hold down alt/option key on the Mac and insert the DVD and boot off of it. Source: over 1 year ago
Possibly, this is a GPU failure which is not repairable, except for a logic board swap, but you can try and reinstall OSx which would require an install dvd or burn OSX to a DVD from Apple and use software like powerISO and burn a DVD (iirc, these old Macs don’t have USB booting) and format Macintosh HD (or whatever the main hdd is called) and X out of disk utility and reinstall OSX. Source: over 1 year ago
The developer provided the GitHub link: http://thomaswilburn.net/caret/. Source: about 2 years ago
In lieu of Sublime Text, you might take look at the Caret editor. It has a lot of the same features. Developers page with info: http://thomaswilburn.net/caret/. Source: over 2 years ago
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