1. On Win 10, if you built the system and it was not preie-installed and OS was an individual purchase, , you can install as many times as you want
"4. Transfer. The provisions of this section do not apply if you acquired the software in Germany or in any of the countries listed on this site (aka.ms/transfer), in which case any transfer of the software to a third party, and the right to use it, must comply with applicable law.
a. Software preinstalled on device. If you acquired the software preinstalled on a device (and also if you upgraded from software preinstalled on a device), you may transfer the license to use the software directly to another user, only with the licensed device. The transfer must include the software and, if provided with the device, an authentic Windows label including the product key. Before any permitted transfer, the other party must agree that this agreement applies to the transfer and use of the software.
b. Stand-alone software. If you acquired the software as stand-alone software (and also if you upgraded from software you acquired as stand-alone software), you may transfer the software to another device that belongs to you. You may also transfer the software to a device owned by someone else if (i) you are the first licensed user of the software and (ii) the new user agrees to the terms of this agreement. You may use the backup copy we allow you to make or the media that the software came on to transfer the software. Every time you transfer the software to a new device, you must remove the software from the prior device. You may not transfer the software to share licenses between devices."
2. On Win 7, every 6 months you get a clean slate ... so if you did an upgrade, 6 months later, that upgrade is considered as original hardware. If you stay in the same brand / family, you likely won't have to do anything. I did three 1156 upgrades to same brand, same model line but new chipset and CPU and authentication process went thru automatically.
3. As for your games... Steam has its own deal so just google the procedure for that.... as for other games and programs this is a rather simple procedure ... we've been using it since early 90s. Our typical set up has one or more OS partitions (or drives), a separate partition for temp / page files and then partitions / drives for programs and games.
- Single Drive w/ OS on C:\ and Programs / Games / Data on D:\
a) assemble the system
b) Install OS by wiping C:\ and installing new OS
c) Install each program and game over itself to set up registry entries
- Primary Drive with OS / Secondary Drives w/ Programs / Games / Data
a) assemble the system but leaving all data cables disconnected except for OS drive
b) Install OS by wiping drive and installing new OS
c) Reconnect data cables to drives
d) Install each program and game over itself to set up registry entries
No problems to date....
Would be a real boon if software vendors included an exe file which sole purpose was to set up appropriate registry entries.