My 2GB DDR2 RAM is actually a composite of two 1 GB RAM and it turns out that one of those 1 GB RAM is defective, which hangs my computer whenever I run an application that makes extensive use of RAM. Changing the defective RAM is not an alternative since my mobo supports RAMs with "16 chipsets"(according to a technician of Hayes & Haier, the retailer of my computer) which has gone extinct from the market(at least, he couldn't find it. Not even the manufacturer of the RAM makes it anymore). If I remove the defective 1GB, then everything works fine.
It seems that the only way to do this is to open the case and remove the defective one and I really don't want to do this since it only hangs my computer when I play games(which I don't do very often). I'm wondering if it's possible to disable the defective one and then play games? This way, I can again enable it after I'm done playing and avail 2GB of memory.