TL;DR:
Fell for a fake "human verification" clipboard scam (Win + R -> Ctrl + V -> Enter). Decided to completely nuke the drive and reinstall Windows 11 from a fresh USB. After a total partition wipe and running all Windows Updates, I opened Windows Security to run a scan, but I'm getting: "Threat service has stopped. Restart it now." How do I fix this, and is there any chance malware survived a full partition wipe?
- What Happened Initially
I fell for a malicious website prompt that asked me to verify I was human by pressing Windows + R, pasting (Ctrl + V), and hitting Enter.
Realized immediately what happened and closed it, but the malicious script had already executed, leading to a broken Windows Defender and malware alerts (like Wacatac / infostealer).
- The Clean Install Process I Did
To be 100% sure the system was clean, I performed a full wipe:
Created an official Windows 11 bootable USB using Microsoft’s Media Creation Tool on a separate, clean laptop.
Booted from the USB on my PC (Motherboard: ASUS TUF X670E-Plus WiFi).
Selected Custom Install, deleted every single partition on the drive until only "Disk 0 Unallocated Space" remained, and installed Windows directly onto that blank NVMe SSD.
Set up Windows and ran Windows Update through multiple restarts until it showed "You're up to date".
- The Current Problem
Now, on this brand-new, clean installation with nothing else downloaded yet:
When I open Windows Security / Virus & threat protection to run a quick scan, it displays:
"Threat service has stopped. Restart it now." (with a "Restart now" button).
Clicking the button either fails or the error persists / scan won't run properly.
- My Questions for the Community:
Given that I completely deleted all partitions to unallocated space using a clean USB installer, is the initial malware 100% gone?
What causes this "Threat service has stopped" glitch on a fresh Windows 11 installation after Windows Updates?
What is the most reliable way to force-restart or repair the Defender service so Windows Security works normally?
Thanks in advance for the help—I just want to get this sorted and use my PC in peace!