I have a Compaq Presario. I have a Compaq Presario F700 laptop. It was telling me I have low disk

Question

I have a Compaq Presario F700 laptop. It was telling me I have low disk space on Presario_RD (D). I have already deleted alot files and programs and I have also did a disk cleanup and ran the disk defragmenter and I am still getting the same message. What do I need to do to free more space on this drive.