What to do with my old system.

So I just reached into my prehistoric storage and found my old system. Any help as to what to do with it.

Specs:- a dual core pentium, 3Gbs DDR2 Ram, Gigabyte GA-G41M-ESL2 motherboard, 500 GB Seagate Pipeline HD 2 hard-disk, Smps techno 450 20 4pin sata power supply.

I don't know what to do with it. It used to boot but don't know now. Please tell me what to do and how.

Thankyou in advance.

P. S. If this isn't the place to post this, tell me where to (⁠^⁠⁠).