You can upgrade RAM and the hard drive without a full disassembly.
If you need to reach the fan for cleaning or replace the keyboard, more steps are required:
Hp Probook 450 G0 Disassembly
You can upgrade RAM and the hard drive without a full disassembly.
If you need to reach the fan for cleaning or replace the keyboard, more steps are required: hp probook 450 g0 disassembly