I've used 3 Dell computers while in the employ of the feds and each one died promptly after the 3 year warranty ended.
Trying to replace simple parts like a cdrom was never possible b/c of the proprietary formats (specialized case, hole locations, etc.)
The only thing i might buy from Dell now is a cheap flatscreen monitor and even that i doubt.

"Those who preach the myths of audio are ignorant of truth."