Need advice and help

Hi all, i was wondering if someone on here can enlighten me regarding my PC please? I have an ASUS P5P800-VM motherboard but upon searching on the internet, since I've lost my manual specs, a different image shows for a P5P800-VM motherboard. My motherboard has four slots for memory modules while the one that I found on the net has only two slots. Did i just bought a fake mobo? And is there a way to upgrade my CPU? If so, how do I do it? Thanks for your attention in reading this and PEACE.

Hi DON, thanks for the info man, i'm not at home so i can't open my PC, but as far as i can remember, the CPU's description for this mobo is: LGA775 socket for Intel pentium d/pentium 4/and celeron...the reason i'm asking about processors is, i assumed that my processor is defective because every time i save a game, it shuts down abruptly and i have to completely unplug the PC from the power outlet for 30 mins to 1 hour so that the PC can start up again. At first, i thought it was a virus but after removing some viruses w/ nod32 and malwarebytes it is still the same. Next thing i did also was to clean the PC and i didn't even re-install the cover to allow air passage inside the PC but still didn't work. I also added RAM (1 GB) but still the same. BTW the game i was playing was freedom fighters(I only play the older games coz my comp is pretty jurassic). Speedfan shows that my system reaches 58 deg Celsius and when the PC is running, the CPU fan is really running high, i mean the sound it makes is like a dynamo running at the fullest speed (sorry i don't know how to describe it). So maybe its the processor that's deffective or i could be wrong...thanks for the time man...shitty PC is really pissing me off everytime i'm playing a game...hahaha...Thanks again...PEACE.