Prebuilt systems suck.
Look inside the cases of consumer level dells, the HDs get put in isolated bays so not only do they get no air, but the heat stays trapped in them. Prebuilt system usually make sure to use western digital to ensure quick failure, because names like CAVIAR make people think of quality, while they're really buying a piece of crap.
They get such awful PSUs, that make rosewills and thermaltakes look like Seasonics and PCP&P models. This also ensures quick failure.
It's as if they're designed to fail.
You can be your own tech support, too. I am 99% sure you're smarter than the guy on the other end of the phone. You by yourself, at least. With this forum, and others like it, you're even more ahead of the curve.
If it's for someone else, who is not computer literate, I recommend Dell. They'll ruin their computer's OS before the hardware has any issues. Then say it's slow, stop using it for a year. Then finally decide to buy a new fast computer to fix the problem. They'll ruin the new PC and it'll start all over again, until they grow a brain or stop using computers.
Fixing other people's computers is an awful job. It took me an hour to tell someone over the phone how to get a dll into their system32 and system directories in windows. People lose all common sense when dealing with a computer. I don't even as recommend parts or a brand unless I know the person has a working brain, because the second I do, they'll somehow hold me accountable for their system being messed up when they download SPANISH_XXX_ANAL_****_BLOWJUB_CUM.AVI.MPG.exe off of kazaa that installs 30 worms on their system.
I once had a Dell laptop and actually knew more about what was going on than most of their techs. On one occasion I informed the tech what was wrong, he agreed; but their parts dispatcher decided it was something else and shipped the wrong part; Augh another call to Dell to straighten it out.
My old Inspiron 8200 was a waste of money, I never actually used it portably. I moved it six times.. once to a family member's house, once to the side of a pool, once from kitchen to basement, and another time from kitchen to a bedroom.
Three HDs died, the LCD went bad, it came with a dying graphics card, the motherboard died one time after it shut down, the CD burner stopped working, the modular bays no longer can hold a drive.. I did use it everyday, but it was moved around less than the average desktop.
I feel your pain. They sent me the wrong CD drive once, wrong HD another.. god awful company.