Why is Windows 10 so slow?

So I couldn't resist the "Free upgrade" to Windows 10 on my laptop.  I have a great i7 laptop that runs extremely well.

After the upgrade, things are very sluggish.  In fact, it takes around 5 minutes to start up.

Anyone else experience this?  Anything I can do?
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Cliff GaliherCommented:
Could be a bad application (such as antivirus) or a bad driver. I'd back up your files and data, make sure you have your application install discs (such as QuickBooks, office, etc) and then do a full reset (you can do this from the settings app). This wipes the drive, so bad applications and drivers get blown away, then it reinstalls windows 10 "clean" from the recovery partition it created during the upgrade process. I've seen several upgrades exhibitors behavior that this fixes.

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First, analyse what's going on.
->Now it takes 5 min to boot - how long was it with 7?
->where is it stuck while booting?
->do task manager or resource monitor show excessive use of CPU/RAM/Storage activity? What process causes these?

From there, we can start.
Also, it will not hurt to update all drivers if possible.
Gary CaseRetiredCommented:
Clearly something went wrong -- '10 should boot as faster or faster than '7 did.

Look carefully at all of your programs and see if any aren't compatible with Windows 10 [It should have notified you of any incompatibilities, but may have missed some].    You can check the web sites for the software manufacturers to see if the versions of their program(s) you have are Win-10 compatible.

One thing you may want to consider is simply reverting to the previous OS (Windows 7).    For 30 days after the upgrade, a "Windows.Old" folder is maintained, and if you go to the Recovery utility in Windows 10 one of your options is to "revert" to the previous OS.    Note this is only available for 30 days -- so depending on how long it's been since you did the upgrade, you may want to do that until you figure out what your compatibility issue(s) is/are.    You can always upgrade again (and start the 30-day clock over).

As noted above, one of the options r.e. "what to keep" is to keep NOTHING => which will do effectively a clean install.   But if you do that be CERTAIN you have installation media for all your programs; and that all of the data you need has been backed up, as none of that will be available [I'm not certain, but I suspect this option also does not retain the ability to revert].
Mal OsborneAlpha GeekCommented:
Not normal.

W10 is no more "bloated"  than W7, generally boot time will be similar on similar hardware. My first step here would be to run a CHKDSK /R, this will reboot and do a read of all sectors. If you have ANY bad sectors on the drive, then copy off you data quickly and bin the drive.
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