Will removing the casing to my Inspiron 530S invalidate my warranty? The warranty still has a year to run and I need to remove all the dust, etc from inside the PC,
No it won't. Be sure to follow all the safety instructions in your manual. You should also read Cleaning your Computer.
I bought a can of compressed air from my local store. A few squirts of the air, cleans all the dust out, no need to take anything out of the case.
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