Step 2: Wrap it in aluminum.
Step 3: Place on "oven" for an entire session of Battlefield 1.
Step 4: Remove freshly baked games from aluminum foil and promptly toss seagate in the garbage.
Step 5: Buy these instead:
Samsung 850 EVO 500GB 2.5-Inch SATA III Internal SSD (MZ-75E500B/AM)
Inateck 2.5 Inch USB 3.0 Hard Drive Enclosure External SATA HDD and SSD Case - Optimized for 9.5mm 7mm 2.5" SSD, Tool Free (FE2002)
Step 6: Install games to the SDD, and... Enjoy!
That's a decent machine, your main bottleneck is the hard disk drive which at 5400 RPS is very slow. You can move to an SSD, but the downside is that it will be very expensive to get decent storage. A 500GB SSD will cost about $200 (though just noticed that this one is available for $150 at Amazon http://www.amazon.com/dp/B00OBRE5UE/?tag=pcpapi-20 ).
That will be very fast but you will run out of storage at about 10 AAA type games (not as much of a problem if you're playing mostly indies).
Another alternative (which us what I did with the same system) is to upgrade to a hybrid drive, an SSHD that will give you 70% of the speed bump for about 30% of the cost per gigabyte. This 1TB drive is around $80 http://www.amazon.com/dp/B00B99JUBQ/?tag=pcpapi-20 .
Should work just fine with the drive alone.
Do yourself a favor, check amazon, save yourself a ton of cash