Computer's falling apart – Should I get something new?

I have an Dell Laptop – Inspiron 2200 Notebook.

When I closed it (Screen shut and all) I see that a small chunk of the plastic has broken off of the top right-hand corner. It didn’t seem to affect anything, so I ignored it. Tonight, the area surrounding the power button and the lights near it wants to pop out completely, and it makes the keyboard unlevel. The laptop has also been getting VERY hot VERY quickly, to the point where touching the keys could hurt your fingers slightly.

Is it time to consider something new?

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