Abeg I fit play pes16 and other games 4 dis pc
*AMD dual _ core processor E1_2500(1.4ghz)
*AMD radeon HD8240 with 512 graphics system memory
* 4GB DDR3 memory
*500GB HDD

Please ur reply will b appreciated , am also new into PC gaming

You can only play older games that works well with lower spec systems. What killed your system is the Processor.....If it were at least up to 2ghz it would have been another story.
Here are some games that will run on the PC:
1.All PES. 2013/2010 (Set battery performance to "HIGH PERFORMANCE", PLUG IN THE POWER CABLE, IN THE TASK MANAGER SET PRIOTY TO "HIGH')

2. CALL OF DUTY 2, CALL OF DUTY MODERN WARFARE4, CALL OF DUTY MODERN WARFARE 3, CALL OF DUTY WORLD AT WAR, CALL OF DUTY MODERN WARFARE 2 ( SET FOR LOWER GRAPHICS)

3. NEED FOR SPEED MOST WANTED

4. BLUR

THERE SHOULD BE OTHER ONES TOO: BUT YOU CAN HAVE THIS ONES FOR NOW.

CHECK THIS AKSBLIV10'S THREAD FOR OTHER GAMES https://www.nairaland.com/3216308/gaming-intel-hd-igraphics

Tanks for the reply.. But can a processor of a PC be replaced

Jumba:
Tanks for the reply.. But can a processor of a PC be replaced

Yes! But depends on the motherboard too. Changing the PC is better.
PC manufacturers are just too weird! Giv a pc 512mb dedicated and 1gHz processor.... Can't stop laughing.

Hello OP, from the reader of most pc games I've installed a minimum for the processor is usually 2.0Ghz and this beats yours a bit. then again, the readme gives suggestions for optimal performance and my own system (2.1Ghz, 4G ram, Intel graphics card- in summary a basic one ) has run a number of awesome games.
what I noticed about some games is that they leave file extensions that aid the smooth running of their software on your device