HP Probook - Never again!

In February 2010 I purchased an HP 6540b ProBook. On the 17th of September 2010 the problems started and the first parts had to be replaced. After that, parts had to be replaced on a regular basis: HP had to replace parts 6 times with a total of 19 parts of which some parts had to be replaced more than once and some even three times. At no point did HP offered to replace the unit or find alternative better quality parts to solve the problem on a permanent basis. The last replacement was done in November 2014 and within a few weeks one of the replaced parts is already giving problems again.HP offered again to replace the part for the 4th time which indicates to me that they realize there is a problem. I had to endure frustration, downtime, loss of work hours, etc. from within 7 months of purchasing the ProBook. Surely, like some other brands, HP should have offered a replacement, an alternative solution or supp**** me with a solution/recommendation to prevent parts from wearing out a long time ago. Obviously my choice to purchase an HP Probook 6540b was a poor decision and I regret not going for another brand.