Hardware Failure!

My family has owned Dells for over 8 years now and we are on our 3rd Dell Computer. We never had any problems till the most recent one. I bought a Dell XPS 710 roughly 2 years and 1 month ago. I have enjoyed it for the most part except on 2 occassions now each being one year apart and the most recent being today, the motherboard has failed and must be replaced. This is a severe inconvenience for several reason. First I lose the use of my computer for several days. Second I have to stay at home on a certain day when the part arrives and the tech can come out. Third once the new motherboard is installed I have to reinstall windows because windows does not recognize the new motherboard and gets all querky. That, in addition causes a whole number of problems, which basically results in lost files and me having to reinstall all the other software on my PC which ends up taking at least a week to complete. Considering the amount of money I spent on this PC I think the problems I'm having are outrageous. I basically have a lemon. Thank god I got the extended warranty on the thing or I would have had to replace the motherboard out of pocket twice now and there is no reason for me to believe that it won't happen again in a year and this time my warranty will be up. Constant and reoccurring hardware failure of the same part seems to be a serious issue with my current Dell and as of right now I don't know why I should buy another or recommend to any of my friends or colleagues that they should buy one unless this issue is resolved immediately.