Windows 10: windows 10 home deactivated ?

hi guys , I have just recently built a new pc and I transferred windows from my old computer to this new computer via my ssd. I had afew problems with recognising my new system through windows so I used the windows defender to reinstall windows. it was all working fine until yesterday when the activation water mark came up on my screen when I was playing csgo on steam. I have tried ways of reactivating windows but I got lost in the process. I do not have a product key as the windows 10 was from a prebuilt hp pc. is there anything I can do in this situation ? as I don't want to buy windows and I think a few software problems are occurring like internet lag and a few others due to this windows 10 deactivation as I had no problems before. please reply asap thankyou very much

:)

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.

 

Unlocked Realtek HD Audio Drivers Windows 7 & 8 (With Dolby Digital Live and DTS Interactive)

DTS supported natively by Windows 8/8.1 and it should work on windows 10 too just DDL require to unlock your driver .

 

Is it time for Windows 10 already?

Here's a good step by step guide on doing a fresh install.

How to clean install Windows 10 from a USB drive - Software - Feature - HEXUS.net