Cant Install Corsair XMS2 on my ASUS P5Q

[Micheal]

Yesterday I bought two 1GB modules from Tirupati Enterprises, type - DDR2 800MHz XMS2-6400 having latency figures 5-5-5-18 (the model number is CM2X1024-6400). Theres also written on the module "1.90V ver5.2".

I had bought my ASUS P5Q on August end. No qualms so far with a petty Transcend 1GB DDR2 667MHz module. I intended for a matched XMS2 pair but didnt get one.

The thing is when i inserted the modules and booted up, Windows Vista(32 bit) started but the machine hanged within 3 minutes. I tried putting the modules in the other slots as well with other placing combinations but to no avail. Next I did the same thing but changed "DRAM Frequency" in the BIOS (under "Ai Tweaker") from Auto to 1.90V. Still the same thing. My pc didnt stay alive even for 5 minutes. Every time giving a quick BlueScreen with a message at the end saying "Dumping physical memory to ..." and restarting, then booting problems start.

If you buy reputed modules and this is what happens (not to mention my 3 months long savings) what shall we do?

I have inserted my old Transcend module in place an am currently working from that. Please help me people.

[The Sorcerer]

Put the transcend rams back and update the bios. Latest bios needs to be put since newer asus boards are not exactly a out of the box type.
After doing the bios update we need to check the rams if they are working properly. Next time when you post, I need to the entire config and let me know once you are done. I have a p5q deluxe board so I know how silly newer boards can be.