my game lags alot
i run l4d smooth

2.0 GB Ram
Pentium(R) 4 CPU 2.80 GHz
NVIDIA GeForce 8400 GS

Tekmunk


Most of the time a lag issue is caused by drivers. You will wan to update the video and sound card drivers from the manufacturer's websites.
Also it could be one or more background processes. You can put your system into a general selective startup by following the steps below.
1. (XP) Start Menu then click on Run and type in msconfig.
(Vista) Start Menu then type in Start Search box msconfig
2. In the General tab put the bullet next to Selective Startup.
3. Only uncheck the Load Startup Items box.
4. Click Apply and then Ok.
5. The system will then have you restart, allow it to.

Your CPU doesn't meet the requirements, which is a Pentium D (dual core)