Hmmm I think you probably just had some extreme bad luck. At my last work we had 40+ Dell workstations ranging from PIII 600's to P4 2.0's and none failed for the 2 years I worked there and some were already pretty old. At my current job we have 8 Dells which are P4 2.0's to 3.2Ghz and only thing so far is the DVD burner quit on one but thats understandable since they burnt tons of discs.
We've had a few HP workstations though (D530 series) with motherboard issues and failed USB ports and a couple iMac G5's with failed hard drives and 2 G5 towers with issues...one failed HD and the other PSU.
So far I have to say I'm very impressed with Dell's reliability at least for desktops. Not sure about notebooks though.
Since 2002, I have purchased so many Dell's, that luck would be factored out. If Dell did not do somethings right, then we would have dropped them long ago. Prior to buying Dells, we purchased HP. We were with them for about three years. The desktops were Vectras and the laptops Omnibook 6000's.
At first we liked the machines. But, the performance of the Vectra was pretty bad. The reliability was good. The Omnibook had a nice design, good graphics (for then) and performed well-enough. Then they began to just fall apart. I still have about a dozen carcasses to toss. We were cannibalizing them the keep the others going. Of all that expensive HP gear, two Vectras still live and are used as dedicated scanning stations.
When the P4 came out, we started buying Dells. The first group (maybe 8 of them) were 1.4 GB. Every one of them had at least one motherboard replaced within a very short time period. The 1.7 GB were much better and had above average reliability. Since then, we have moved through the entire Precision 300 series line. We also purchased Dell Servers, beginning in 1999. After three backplane failures, we quit.
I spent 15 years in aerospace manufacturing. I can look at most things and tell how they are made, and how
well they are made. You can see the tolerance build-up in the Dell products. This is the quickest visual way to guess at a manufacturer's control systems and quality assurance. Dell sells cheap, mass-produced computers. We all know the saying, "You get what you pay for". We also tend to conveniently forget it at times.
Dell is not an engineering company. They are an assembly company. That is where they differ from Apple. I can remember a time when a large percentage of PC's were made locally. The CPU was Intel, AMD or Cyrix. Hard drives were the standard fare, as was memory, motherboards and the rest. So, anyone could be a PC manufacturer. I remember when Dell first began to advertise. They were just another name in a countless list basically offering the same thing. They just marketed it a little better than the rest. But, over the years they began to sacrifice customer service for larger margins and increased market share.
The Dell mentality is still basically rooted in that same mail order business model. Their reliability is based on the components they buy (not unlike most others PC manufacturers). Their customer service has greatly declined. For awhile, they have been able to keep their corporate customers happy (often at the expense of the home buyers). But, even that has been sagging. Right now, Dell is making a big push to 'win the hearts and minds' of major buyers.
Three weeks ago I received a visit from my account rep's manager and his manager. They wanted to discuss issues I have been raising over some rather dreadful performance. They listened to what I had to say (with documentation). Their shoulders drooped more with each new issue. At the end, they offered me financial incentives. If they had been understanding the issues, price was NOT something I mentioned. They missed the boat after flying all the way up here from Texas. These were both smart individuals. My perception is they do understand the issues. They just do not have any solution to offer, other than price.