MicroTest
4 Tellurium

Re: Inspiron 1545- replacing hard drive, new SATA drive not found "Internal Hard Disk Drive Not Found

This is strange - either the new hard drive has a rare compatibility issue with your onboard controller (I use a 500Gbyte in my 1545 without probs)) or it is a mechanical problem.I would take a close look at the physical dimensions and compare your original hdd with the new one.Watch the video (even though it's about a 1525 (similar to an 1545) and an SSD hdd) -  go to 2:20