Nvidia Vista Problem

Nvidia Vista Problem, Well i bought an assembled pc last month, Config -- C2D 2.8 ghz, 500 gb HDD, 4 gb ram, G31/33 Mobo, nvidia 9500 gt 1 gb graphic card, 18.5" widescreen AOC monitor.

1st - I'm Using a Windows Vista Home Premium OS, and it shows me just 3 gb of ram rather than 4 gb......

2nd - When i try 2 play games like farcry2, nfs undercover, underground2, Most Wanted, games freeze atleast 4 out of 5 times. But when they run, they run smooth, and fast at all settings high.....(Sometimes games freeze, n sometimes weird colors appear ehile playing) Else times, when not PlAYING GAMES, the pc works flawlessly

If ne solution, pls suggest......Would be Very Thakful

Digital Compass -- @ 1st problem.

Its not a real problem at all. I hope your must be a 32 bit system. any 32 bit system will only use 3.5Gb of RAM in winxp and 3 GB in windows Vista. Rest of memory will never be used and never be shown.

@ 2nd problem. Check whether the Nvidia drivers are updated till curren tdate. Here is the link: http://www.nvidia.com/Download/index.aspx?lang=en-us