I've built a new system and after running the windows experience index it says 'Windows experience index could not be completed' and the problem may be with some components or OS. Here is the configurations.
AMD Phenom 2 x4 965
Corsair XMS3 Dominator 4GB 2-Kit Phenom II DDR3 1600MHz CL8-8-8-24
HDD WD Caviar Black 3.5" 1TB SATA-III,7200rpm, 64MB Cache, 8.9ms
These scores seem to be right. The processor is 7.4 out of 7.9 - very good. The hard disk will not score more than this, only SSDs usually score more. Onboard graphics won't score much and I built a system recently with DDR3 1333 and it scored about 5.8 so don't worry. I'll bet it's fast. What is not completing about the test?