Hi, I have purchased Crucial Ballistix DDR2-1066 RAM 1GB * 2 (total 2GB) from US around 2 weeks ago from PGN (or PNG??)... Yesterday when I was setting up my new PC. During the installion of Windows XP, it came up Blue Screen... i was like wtf? then I changed the RAM to PQI DDR2-800 1GB * 2 ram... and it worked fine!!! ok!! so.. i used PQI ram to finish up installing Windows XP. After that i changed it back to 2GB Crucial Ballistix. It was fine when i was doing web browsing or MSN... after I installed the game - Team Fortress 2. I played around 15mins then it came up blue screen again! i was so pissed! lol... then i restarted my pc and played the game again... 10mins later... blue screen again! OMFG!! alright... fine... now i changed to PQI ram again and test with team fortress 2. YES!!!! i played 1.5 hours and no errors! so i think the ram is having problem? i restarted my PC and checked BIOS... The timing for PQI is: CAS Latency Time 5 DRAM Ras# to CAS# Delay 5 DRAM Ras# Precharge 5 Precharge delay (CRAS) 16 is this mean 5-5-5-16??? anyway... then i changed to Crucial Ballistix ram again and checked the timing: CAS Latency Time 5 DRAM Ras# to CAS# Delay 7 DRAM Ras# Precharge 7 Precharge delay (CRAS) 24 5-7-7-24?? (wtf? huge different!) so can anyone tell me is the timing or other things of the Crucial Ballistix RAM is having problem? (i think is the timing...)... if is the timing issue then what speed should i change to? please advise! MY SPEC: E8400 3.0GHz Crucial Ballistix DDR2-1066 1GB * 2 (not working fine...) PQI DDR-800 1GB * 2 (it works fine) GA-P35-DS3-R v2.1 (BIOS F11) Inno3D 8800GTS 512MB (the latest driver but forgot the name) 40GB + 500GB HDD Silverstone 750W PSU The RAM is new and i didnt OC my system! they are all running default! OCer.... please help me! thank you!