I ran them on XP PRO in my spare computer for a couple of months. They worked fine in my machine and it was an older motherboard too. You may double check to make sure your machine uses DDR2 ram, other than that I believe they should work.
DDR2 PC2-5300 (commonly referred to as DDR2-667) memory is DDR2 designed for use in systems with a 333MHz front-side bus (providing a 667MT/s data transfer rate). The "5300" refers to the module's bandwidth (the maximum amount of data it can transfer each second), which is 5300MB/s, or 5.3GB/s. PC2-5300 is backward-compatible for PC2-4200
F&W Hope i can win this. I pretty much gave up trying to get a laptop here. They're all either broken or get deleted. So, now i'm gonna work on upgrading my new destop :)) Thanks for the auction btw, havent seen DDR2 RAM on here (I'm a newbie-ish, lol)