Before i start I should probably mention my PC configs:
Motherboard - MS-7525
Processor - Intel Core 2 Duo E7400
RAM - 4GB (initially it was 2GB, I
upgraded it)
Hard Disk(s) - 320GB[stock] + 1 TB Hitachi
Power Supply - UMAX SMPS 450W
GPU - Gainward GT630
Lightscribe DVD+/-R/RW
Mostly I use my PC for Watching HD Videos and browsing the Internet, Downloading and stuff.
I notice Laggs when I play Team Fortress 2, GTA SA and other games. There are sudden drops in frame rates even though V-sync is On.
My PC almost always Laggs ,sometimes it crashes showing bluescreens, and sometimes it randomly restarts itself.
My friend says its because, only '20 pin' connector is connected to my motherboard. He's saying I should also connect the 4 pin to the 24 pin socket. When i changed my PSU for the second HDD, it was some tech guy who installed it(I was clueless back then). My friend is saying the lagg happens occurs because my graphics card is not getting enough power from the motherboard,and I should connect the 4 pin to the motherboard and replace my Power Supply Unit to a 500W one.
What do you guys think What Should I do?