I just attempted to install win7 x64 on one of my other systems, an AMD Athlon II X2 240 Regor 2.8GHz, with 2 sata hds both at 500g and server 2003 on the primary drive working fine (so far) ... unless I use Paragon to make a partition on the main drive .. then I see performance hits in server. It has 4g of ram Newegg.com - Mushkin Enhanced Blackline 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model 996580 - Desktop Memory and a 9800 GT 512mb vid card, using an asus board: Newegg.com - ASUS M4A785-M AM3/AM2+/AM2 AMD 785G HDMI Micro ATX AMD Motherboard - AMD Motherboards . So, system boots from the win7 cd and the expected screen comes up. Thing is all the animation and processes are running at the speed of sound. The animation reminds me a whole lot of running a dos game on a pentium based system without any sort of clock cpu limiting software such as moslo. I installed it on the second of the 2 HDs. It finishes install and gets to where you have to type in a user name and the second you press any key on the keyboard, it repeats ... it's only a question of how many times it repeats). This is making it totally unusable, while server still runs normal. So ... I'm at a loss here?