My computers last a LONG time.. I shut them down when not in use and clean em regularly, my 1st home computer (a Mac Performa 475) lasted 10 years, my children were using it to go online after I replaced it with a Power PC..which also lasted 10 years with the kids again using it to go online after I replaced it with a Dell in 2004, that computer is being used by my oldest son NOW as his primary machine for normal online work..
Each machine was cleaned every quarter with dry air and electronic contact cleaner (and was unplugged each cleaning) with only Ram upgrades as each type's Ram became obsolete (I.E. Cheap)..however I added an additional hard drive to each for redundancy..
Each machine was cleaned every quarter with dry air and electronic contact cleaner (and was unplugged each cleaning) with only Ram upgrades as each type's Ram became obsolete (I.E. Cheap)..however I added an additional hard drive to each for redundancy..