Forum Discussion
Why did my Win11 OS shutdown in middle of copying?
I was copying about 2 Tb of archived documents from an external USB HDD to my new SSD in a Dell Precision Tower 7865 using GSRichCopy360. The PC is on an UPS and there were no blackouts/brownouts last night. I had set all Win11 power options to NEVER and Window Updates were set to off. Woke up this morning and discovered something caused a system reboot shutting down the copy software and bringing me to the Win11 log-in screen asking for my Pin. Richcopy was only about 20% done. I opened Event Viewer and no critical errors. Lots of warning errors most related to cloud activity but I wasn't copying anything to or from cloud. C RichCopy has a log which I had set to "practical" but it basically had no information other than a system shutdown event had occurred.
4 Replies
Unexpected reboots during large file transfers are often caused by hardware issues, driver conflicts, thermal problems, or power supply glitches. Since Event Viewer didn't show critical errors, hardware diagnostics and reliability analysis are the best next steps.
Try another disk clone app instead.
Overheating or thermal throttling can also cause shutdowns mid-process.
Run chkdsk /f to scan for disk errors to prevent interruptions.
