Make sure you are running the latest version of either Windows 7 SP1 or Windows 8.1 Update.
This means downloading ALL of the windows updates BEFORE trying to upgrade to windows 10.
This includes SP1 for windows 7. There are several hundred updates and many reboots before you are done.
Don’t know which version you are running? Check here to find out.
windows.microsoft.com/.../which-operating-system
Need to download the latest version? Click here for Windows 7 SP1 or Windows 8.1 Update.
windows.microsoft.com/.../install-windows-7-service-pack-1
windows.microsoft.com/.../install-latest-update-windows-8-1
Processor:1 gigahertz (GHz) or faster processor
Which really means Pentium 4 or better from around 2006 or later.
Best upgrade for some will be PRESSLER pentium D 900 series.
RAM: 1 gigabyte (GB) for 32-bit or 2 GB for 64-bit
2 + Gigs or more is actually needed if you have a system that steals ram for Video this is 3 + Gigs.
Going over 3 gigs requires a 64 Bit CPU AND the requirements listed Below.
Hard disk space: 16 GB for 32-bit OS 20 GB for 64-bit OS
Graphics card:DirectX 9 or later with WDDM 1.0 (VISTA) driver 128 Megs Video Ram
Display: 800x600 (You will find that for many dialog boxes 1024 x 768 is required)
To install at all requires PAE, NX, and SSE2.
To install a 64-bit OS on a 64-bit PC, your processor needs to support CMPXCHG16b, PrefetchW, and LAHF/SAHF.
Windows 10 Home users will receive updates from Windows Update automatically when it’s available. Windows 10 Pro and Windows 10 Enterprise users will have the ability to postpone updates. The amount of time that Windows 10 Pro users can postpone updates is limited.Any bad updates will kill your machine and if you dont have a backup you are totally hozed. The logic behind this is that Microsoft will be able to push an update to kill pirated versions of windows as well as determine how long windows 10 lives or not.
If you have Windows 7 Home Premium, Windows 7 Professional, Windows 7 Ultimate, Windows 8 Pro with Media Center, or Windows 8.1 Pro with Media Center and you install Windows 10, Windows Media Center will be removed along with the ability to play DVDs.
MDM functionality will not be available in Windows 10 Home edition when Windows 10 is released.
Windows 7 desktop gadgets will be removed as part of installing Windows 10.
Solitaire, Minesweeper, and Hearts Games that come pre-installed on Windows 7 will be removed as part of installing the Windows 10 upgrade. Microsoft has released a version of Solitaire and
Minesweeper called the “Microsoft Solitaire Collection” and “Microsoft Minesweeper.”
If you have a floppy drive, you will need to download the latest driver from Windows Update or from the manufacturer’s website.
If you have Windows Live Essentials installed on your system, the OneDrive application is removed and replaced with the inbox version of OneDrive.
Miracast requires a display adapter which supports Windows Display Driver Model (WDDM) 1.3 Directx 11,
and a Wi-Fi adapter that supports Wi-Fi Direct.
OneDrive does not support placeholder files in Windows 10. Windows 8.1 displayed placeholders for files available in OneDrive but not on locally on the device.
In Windows 10, users can choose which folders to sync from OneDrive settings.
Snap is limited to 2 apps in Tablet Mode.