My HP laptop had its motherboard replaced a few months ago, and it was wiped and reinstalled with Windows 11. After working normally for a while, it began showing a blue-screen error with the stop code CRITICAL_PROCESS_DIED (0xEF). It then boots to a message saying "Boot Device Not Found" and asks me to install an operating system on the hard drive. The built-in diagnostics sometimes reports that no drive is installed, although the drive appears again if I manage to start Windows without another crash. Restarting temporarily fixes the problem, but it keeps happening. Is there anything I can try to repair this, or does the drive need to be replaced? I can't afford a new laptop right now.
3 Answers
These symptoms most strongly point to a failing SSD, even though people often call it a hard drive. If the drive disappears from the BIOS or hardware diagnostics, replacing Windows files probably won’t solve the underlying problem. A replacement SSD and a fresh Windows installation may be needed. Since the motherboard was recently replaced, the drive connection or motherboard could also be faulty, so a repair shop should check those if a new drive doesn’t fix it.
There is a chance Windows itself is corrupted. After backing up your files, you could try starting in Safe Mode and running DISM with `DISM /Online /Cleanup-Image /RestoreHealth`, followed by `sfc /scannow`. However, those tools cannot repair a drive that is physically dropping out of the system, so don’t delay replacing it if diagnostics continue to report that no drive is present.
The first priority is to back up your important files while Windows still starts. An intermittent boot drive usually means the SSD or its connection is failing, and repeated crashes could make it disappear permanently. Avoid repeatedly restarting it if you have data that isn’t backed up.
Thanks, I’ll try the repair commands after making sure I can save my files. If the drive disappears again, I’ll assume the SSD or its connection is the problem.