Core 2 Duo, programs only use 1 core
Hope someone here can help. We have taken delivery of some Dell Optiplex 360 Core 2 Duo E7400's We have rebuilt machines using our XP VLK slipstreamed with SP3. Machines appear nice and nippy but we experienced issues whilst playing around with IE hanging. We did some nosing around and noticed in task manager that running processes were using only one core despite TM displaying graphs for two cores. Checked on untouched Dell install and processes using both cores.
Installed CPUZ and this detects two cores. Have tried replacing HAL.dll but problem remains. Anyone got any ideas?