Start->Run->cmd.exe<enter>
cd %temp% -> this command gets you to the log file directory
dir wmi* -> this command lists files with wmi prefix
Notepad xxx.log -> xxx is the log filename from the previous step
Look for error messages, type them into msn.com
Don't skip this step, it will slow down your computer.
Start->run->regedit.exe
Open treeview to key: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Installer
Select value: logging ->logging should be blue, look below
menu->edit->Delete
If your installing a new hardware device, (usb web cam)
open file C:\WINDOWS\setupapi.log and analyze using
setupapilog.doc. On Vista, see C:\Windows\inf\setupapi.dev.log and C:\Windows\inf\setupapi.dev.log.