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#21
If that's the factory preinstalled Win7 then it is a corrupt install to begin with, larded with bloatware and useless duplicate utilities which have better versions built into Win7 and which interfere and throttle the best OS ever. That's why most tech enthusiasts won't run such an install but Clean Reinstall - Factory OEM Windows 7. Everything needed is in the link.
This is not XP, Win7 is the first driver-complete OS which provides drivers in the installer and during all rounds of Windows Updates immediately after install, after enabling Automatically get recommended drivers and updates for your hardware (Step 3). You'd only need to provide drivers which are then missing in Device Manager after all Updates are done.