Computers are like cars; you buy some pieces needed and something else breaks off.
I bought a 128MB stick for $25 (The other shop closed down) and a 16MB PCI card for my Dell. Perfect, all running well with Windows XP...now, I need to get those CPUs.
But, my whitebox PII 350 needed Windows FLP in...and the laser gets stuck and fails. Now, it's working okay, but I;ll soon need another one. I repair something, somewhere else, it breaks down
Oh...the joy of computing