Hello all. I have a 2 month old D620 and started getting BSOD stop error. I ran Memtest with no errors. I decided to pull the chip and reseat it and now I'm getting this message: "Amount of system memory has changed..." and then it stops. I've checked and rechecked the chip and it's seated fine. This message pops up before I get a chance to hit F2 for BIOS. Any suggestions, short of trying a new memory chip?