I installed 7264 earlier this morning with no trouble at all. A few minutes ago I attempted to reboot and it took 2 minutes. Upon loading Windows 7 was very slow and laggy so I looked around at the system settings and noticed that only 256 MB of my 4 GB of RAM was usable. I tried restarting into safe mode, last know good configuration,etc but nothing worked. Booting into a Vista partition on the same HDD showed 4 GB usable. What is the problem with Windows 7 and how do I fix it?
EDIT: Memory Diagnostics Tool is running atm.