When your computer won’t boot, keeps restarting, or stops at a BIOS screen, describe what happens after you press the power button. Get likely causes linked to recent changes, a safe order for checking power, boot settings, and hardware symptoms, plus notes on what each result may mean. Leave with a step-by-step checklist and a concise summary to take to a repair shop.
Startup Problems
Troubleshoot a PC that won’t start with an ordered checklist of safe checks.
Use Startup Problems
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Start Startup Problems — $49.99 / month
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What it writes
- Ordered PC startup troubleshooting checklist
- Possible boot and BIOS causes
- Repair shop symptom and test summary
How to use it
Include the exact screen message, whether the fans and lights turn on, your computer model, and the last change before the failure. List each check you already tried and what happened.
What you bring
- Computer model and operating system
- Startup behavior and exact error message
- Recent changes and checks already tried
- Know whether it is a laptop or desktop
A good fit for
- A desktop that powers on but shows a blank screen
- A laptop stuck restarting after a Windows update
- A PC that opens BIOS instead of loading the operating system
Ways to start
A few requests this Agent can handle.
My Dell Inspiron 15 powers on, shows the Dell logo, then says “No bootable device.” What safe checks should I try first?
My desktop started restarting before Windows loads after I added a new SSD yesterday. Which boot settings or hardware checks should I consider?
My Lenovo ThinkPad stops at the BIOS screen, and I already tried removing the USB drive and holding the power button. What should I check next?
Good to know
This workspace provides text assistance.
- Physical computer testing or repairs
- Electrical or battery safety emergencies
- Cannot inspect your computer or verify a hardware fault
- Does not change BIOS settings or run diagnostic tests
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