fyi
#132 errors can be from bad memory timings in the bios or bad memory modules.
also can be caused by corrupt files in the WoW folder as well

instead of shelling out money for new memory, why not test your current memory and see what the problem is. If you buy and install new memory, you will have to do the same tests as you would do now to test for problems.

if you are up to it, you can download a few FREE programs that give you all your computer info like cpu, memory and motherboard models, bios version, and help test for performance issues.
If you do not want to go through all that trouble, just take it to a computer repair shop and have them test it and install the memory if need be.

But digging through the bios and doing the other stuff you will have to do may be overwhelming and time consuming, but it is required for a healthy computer

also sounds like this is a prebuilt computer you bought from the store, am I correct? If it is you may still be under warranty from the computer company (dell, HP, etc) and can get them to do this stuff for you and it should be free.