Games are laggy

I recently installed windows 7 clean and now all the times i try to run are very laggy dosent matter what game its just very laggy at all times in any game havent had this problem with vista or xp before

Fill out your system specs information so we can get a better of idea of what you're sitting on.

OS Name Microsoft Windows 7 Ultimate
Version 6.1.7600 Build 7600
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name LUTHER-PC
System Manufacturer Gigabyte Technology Co., Ltd.
System Model M61PME-S2P
System Type x64-based PC
Processor AMD Athlon(tm) 7750 Dual-Core Processor, 2700 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Award Software International, Inc. F2, 12/30/2008
SMBIOS Version 2.4
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "6.1.7600.16385"
User Name Luther-PC\Luther
Time Zone Pacific Daylight Time
Installed Physical Memory (RAM) 4.00 GB
Total Physical Memory 4.00 GB
Available Physical Memory 2.87 GB
Total Virtual Memory 8.00 GB
Available Virtual Memory 6.73 GB

and its the when any game runs the image and sound is all over staggering it just chops alot its not network lag

Deathtech said:

OS Name Microsoft Windows 7 Ultimate
Version 6.1.7600 Build 7600
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name LUTHER-PC
System Manufacturer Gigabyte Technology Co., Ltd.
System Model M61PME-S2P
System Type x64-based PC
Processor AMD Athlon(tm) 7750 Dual-Core Processor, 2700 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Award Software International, Inc. F2, 12/30/2008
SMBIOS Version 2.4
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "6.1.7600.16385"
User Name Luther-PC\Luther
Time Zone Pacific Daylight Time
Installed Physical Memory (RAM) 4.00 GB
Total Physical Memory 4.00 GB
Available Physical Memory 2.87 GB
Total Virtual Memory 8.00 GB
Available Virtual Memory 6.73 GB

and its the when any game runs the image and sound is all over staggering it just chops alot its not network lag

what video card?

nividia geforce 9600