The problem is not also on ddr's but your hdd as well. Try checking it up.
For hdd: Simple.... don't boot your windows yet... go to dos and backup your neccessary files to another hdd then. Reformat. If things don't go accordingly and you still get the blue screen. Thrash your hdd and buy a new one. I think it cost around 2,800+ 80GB sata.
tagsa raman pud maguba ang memory gawas kung pang games na imong computer. 1st casualty gyd na imong memory and video card. pero kung pang social lang ang gamit sa imong pc. neither na currupt imo OS or daut imo hdd.