I had to reinstall Windows 7 on my Lenovo laptop. I found out when I tried to register the install that the version I installed was the home premium version rather than the 7 basic the computer came with. I have ordered a new copy of 7 home premium, but in the mean time, my DVD drive rarely...
Futuremark has released PCMark 7, the latest version of this general PC benchmarking utility. The free Basic version allows unlimited runs but is restricted to only a single overall system performance test. PCMark 7 will only run under Windows 7.
PCMark | PC Performance Testing