Please don't let him anywhere near the power supplies!
I have several acer devices, and not one of them has had a power supply which could last over 2 years. My Aspire iDea media centre got through 2 PSUs in under 3 years and annoyed me so much I modified the wiring loom so I could attach a standard desktop PSU to it. Unfortunately that's far too big for the case, so has to live round the back of the TV.
My 5 year old Lenovo built thinkpad however, is still on its first power block, as is every Lenovo/thinkpad laptop I know of.