"Although electronically, HP Pavilions are pretty conventional for their time, they have rather unique case designs with extensive plastic coverings. These were, as I mentioned, very dirty.
"However, with care, it is possible to remove them (they are attached with “one-way” plastic tabs that have to be carefully pried and pushed through the openings in reverse. I removed all of these plastic elements (except the base, which wasn’t too bad anyway).
"Then, I carefully laid them out on the racks in a regular portable dishwasher (yes, the same one we use for our dishes). You can wash them on a low-heat cycle, just like any “top rack safe” dishes. This is very effective at getting off old oily sticker residue and other kinds of dirt accumulation. You do have to make sure that they are thoroughly dry before attempting to reinstall them"
