How to stop a PC game from lagging?

I have a windows 7 pc of with an intel graphics card, I have 4 gigs of ram and 300 gigs of space that I bought around 5 months ago and I recently bought a game called Arma 2 which is like battlefield 3 but I'd like to know how to stop it from being REALLY...

My pc is a compaq presario with a intel celeron processor 530 with 120 gb of hard drive and 1024 DDR2. WILL A VID CARD BE RIGHT FOR ME?

I can't really play pc games that much because of my lagging pc. My games just seem to slow down and lag whenever I play them. Some games literally unplayable. Even the low ...show more

I recently bought a new computer in order to be able to play Diablo 3. I love it but the game is running really slow and lags. I'm on a wireless hookup through my boyfriends moms router. Her router is on the other side of the house though. Connected...

i was playing test drive unlimited for pc and for some reason it always starts lagging. Its sort of like slow motion and stopping then going? My pc specs: 512mb RAM, 2.80ghz, windows ...show more

I recently downloaded Avatar: The Extended Edition in HD to my hard drive. It is absolutely beautiful quality but a rather large file (15gb to be precise) It actually runs pretty well but every now and then it freezes and takes a minute to continue playing...

i bought assassin's creed for the pc ( i have a vista ) and it is lagging really bad! the background characters don't have faces, the guy moves really slow and it's so ...show more

ever since i got the game the multiplayer one keeps lagging and i put my graphics low but still laggy help plz

even after i uninstalled it an reisnatlled it 5 times it still has big lag , before my game was hacked it used to have small ping i tried to clean my pc but it wont work im guessing there should be a folder with files from this game so i can delete them...