forced sleep

This has been happening almost since I purchased the computer however it's continued to get worse with each passing month. Especially when working in Photoshop (especially the lasso tool), my iMac will just go to sleep on it's own. Even more so when something is streaming in the background. I...

I have a 15 inch mid-2012 MacBook Pro, and recently, after I changed the battery in February at a third-party store (because the computer was out of extended warranty, and the original battery was reaching its end of life), my laptop started to sporadically hibernate. There wasn't any magnetic...