Update: I stopped reseating RAM on every no-boot ticket and started checking the power supply first
Last Tuesday I had three no-boot machines come in at my shop in Akron and I was about to start pulling sticks of RAM like always, but my boss said to test the PSU with a $25 tester before touching anything else. Two of the three had dead 5V rails and the RAM was fine the whole time. How many of you have a set order for no-boot checks, or do you just go by gut on what to try first?