i need some help and was hoping i can come here for assistance. i have a P4M89-M7A (bio-star) motherboard and am having problems installing the ram i bought to speed it up. the ram are both ddr2 pc2 4200 and i have 2 sticks 1gb and the other 2gb. i installed each ram separately and both sticks boot my system up so theres no problem with that.its not until i put both sticks(the 2gb closest to the processor of course) in the motherboard that just as windows is loading i get a black screen with a Horizonal blue screen at the top with some white letters and words (not sure what it says it comes up and closes too fast to read). anyway i have windows 7 64bit home so it should be no problem loading 3 gb since 64bit OS can detect more than 4gb ram on a pc. i will give some images below of CPU-Z validator to show what the memory for both sticks read. any additional suggestions will be put to the test thanks. also heres my exact mobo P4M890-M7 PCI-E Ver. 7.0
You need to adjust your timings and voltage. The 1GB set is 4-4-4-12 while the 2GB set is 5-4-4-11. For it to work properly they all have to be at the higher latencies- because the board will run them all at the same settings. If you try to run the 5-4-4-11 sticks at 4-4-4-12, it will not work. It may also be that your board will not accept 4 sticks, unless they are matched. It is generally recommended to use matched sticks, because issues can arise. I would recommend either getting a 4GB matched kit, or running the 2GB by itself because the sets of memory are so different.
