I've been having some trouble with my computer for a while, like BSOD's and random crashes. I decided to test my memory and ran Memtest. I started it and on test 2 i got an error that had a memory address - 175.4 MB. I came back 4 hours later and i had 5449 errors with many addresses and a - 418MB. Does this mean 418mb of my 512mb of ram is bad? and could this explain my crashes and problems?