Freezes or Blue Screens (BSODs) After OS Install

1) Check Memory & Heat:

• Memory: Search "Windows Memory Diagnostic" in Start, run it. If errors, your RAM might be bad.
• Heat: Download "HWMonitor" (free). Run it and check CPU/GPU temperatures. High temps (above 85-90°C) are bad.

2)Update All Drivers & BIOS: 

• Ensure all drivers (especially Chipset, Graphics) are updated from manufacturer sites (see Problem 2, Step 2).
•  Check your motherboard's website for a BIOS/UEFI update (be very careful, only do if instructed by support).

3) Repair Windows Files: 

• Open Command Prompt as Administrator (search "cmd", right-click, "Run as administrator"). 
• Type sfc /scannow then press Enter. 
• After that, type DISM /Online /Cleanup-Image /RestoreHealth and Enter. 
• Restart.

4) Reinstall with New Media: 

• If all fails, download a fresh Windows installer from Microsoft. 
• Reinstall Windows from scratch using this new media.

 (WARNING: Erases everything!)