Why does Windows keep showing a blue screen?
A blue screen means Windows stopped because it detected a serious error. The stop code can point toward a driver, memory, storage, overheating or operating-system problem, but one crash does not always identify the exact cause.
What the symptom can mean
When to stop DIY troubleshooting
If the computer cannot stay running long enough to back up important files, avoid repeated forced restarts. If storage may be failing, repeated writes can make data recovery harder.
When professional diagnosis makes sense
If the simple checks do not identify the cause, diagnosis can prevent unnecessary parts replacement. Laptop Clinic serves NDG and Greater Montréal. Describe the symptom and what happened before it started; you do not need to know the technical name of the fault.
Useful details before a diagnosis
Note the exact computer model, when the problem started, and any recent change such as an update, drop, liquid spill, new part or new charger. If the problem is intermittent, a short video or photo of the error can help. For storage-related problems, always mention whether the files are important before any reinstall, reset, initialization or formatting attempt.