To be fair the dells didn't fail as often as others. And when you had to attack the innards they had actually put some thought into how the case was constructed. The wires were always secured in clips which you could unhook and hook back again to you hearts content. Stuff colour coded etc.
I didn't go near Compaq after they sent the village wedgie idiot from Erskin onsite who apart from being your typical Rangers/Celtic bigoted idiot was bloody clueless. We wern't allowed to open the cases because none of us had done compaq hardware courses and all the graphics cards hadn't been tie wraped/glued into there slots so 50% of them wouldn't work.