First the specs: I'm running Windows 7 64-bit and I had 2 sticks of DDR2 SDRAM in it, 1GB a piece, PC2-5300.
I bought 2 more sticks, both 1GB DDR2 PC2-5300. 'SDRAM' isn't listed on the packaging but I assume that's what this is.
So I added the new RAM to the machine. Under 'system' I now have "Installed memory (RAM): 4.00 GB (3.87 GB usable). My other computer also has 4GB but there's nothing about less being usable. Anyway, with this new RAM installed, Microsoft Security Essentials crashes constantly, Chrome was crashing constantly and I reinstalled it so we'll see if that does anything, and I've gotten 2 BSOD's in less than 24 hours.
I read something about synchronous RAM and about mixing and matching RAM, which I don't think I did, but I'm at a loss as to how to remedy this. Do I need to reinstall all my programs? Do I need to reinstall my OS? Is there a simpler option?
saint19, I took out the two original sticks and left the new ones in, and on booting the OS isn't even functional. It boots into windows and then none of the start menu items are even clickable, nor is anything on the desktop, or right clicking, for a few minutes -- maybe 5 minutes. Then everything works, albeit even worse than before -- chrome crashing constantly along with all its plugins and explorer barely functioning.
OK, I installed the old RAM again only and I'm back to my old, less-than-stellar, non-crashing performance. I wonder why the RAM passed the memtest if it's not working in the machine... Is it definately bad RAM, then?
Hey saint19, I couldn't easily find another machine so I just returned the RAM and ordered some new ram from a different vendor. The new sticks work just fine, so, despite the good test result, it appears to have been the ram.