Memory Problem?

[taishan]

Recently, I purchased a 1GB PC4200 samsung ram to upgrade my t43(it comes with a 512MB Hynix Ram). Everything runs smoothly, except that, when I am playing Day of Defeat(a first-person shooting game), the computer freezes(Not responding, not blue screen).

Not sure what causes the problem(memory compatibilty problem?). Can anyone help? Thanks.

[nirvana0001]

half year ago i bought my desktop a 1gb RAM, totally 2GB. the computer run much faster than previous but the blue screen shows up everytime when i play battlefield 2. after that i switched the ram to other brand and it's doing fine now.