Hello,
Please re-open HiJackThis and scan. Check the boxes next to all the entries listed below.
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O3 - Toolbar: (no name) - {DE9C389F-3316-41A7-809B-AA305ED9D922} - (no file)
O18 - Protocol: qbwc - {FC598A64-626C-4447-85B8-53150405FD57} - mscoree.dll (file missing)
O23 - Service: @dfsrres.dll,-101 (DFSR) - Unknown owner - C:\Windows\system32\DFSR.exe (file missing)
O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)
Now
close all windows other than HiJackThis, then click Fix Checked.
Other than that the log looks fine. Would you like to run some more in depth scanners?
Cheers,
Mak