HP G60 notebook runs at a snail's pace

I am having trouble fixing an HP G60 230CA Notebook PC. The Laptop uses a 32 bit Windows Vista OS. It takes about 4 min to Start up and it takes about 2 min to open or close any programs.

In safe mode it runs normally for about 45 sec then enters the same state as normal mode.

I removed the hard drive and used a SATA to USB wire to connect it to another PC to run Malware bytes. Malware Bytes detected and removed a trojan but the problem hasn't changed.
 
How ole is the computer. How old is the hard drive? How much memory is installed? What scans have you already run to search out the cause of the problem?
First thing I would do is save all my data and images to recoverable media, and run a clean re-install.
 
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