No lights or fans
No lights or fans
Startup and Power Problems
No power, no display or endless startup loops?
When a computer will not start, repeated attempts can sometimes make a failing drive or damaged file system worse. 623 PC evaluates the symptom and explains whether the next step is power diagnosis, hardware testing, Windows repair, data protection or replacement guidance.
Home / No power, no display or endless startup loops?
Startup Symptoms
The visible symptom helps narrow the safest first test.
Lights and fans but no display
Lights and fans but no display
Manufacturer logo followed by a loop
Manufacturer logo followed by a loop
Blue or black error screen
Blue or black error screen
Clicking drive or unusual sounds
Clicking drive or unusual sounds
Before You Continue
Protect the computer and its data.
Disconnect damaged or overheating equipment
Disconnect damaged or overheating equipment
Avoid repeated power cycling when data is important
Avoid repeated power cycling when data is important
Do not open a power supply or swollen battery
Do not open a power supply or swollen battery
Frequently Asked Questions
Clear answers before you schedule service.
Should I keep trying to restart the computer?
If the drive is clicking, data is critical or the system repeatedly crashes, stop and request an assessment.
Can a bad power adapter cause no-start symptoms?
Yes. Power adapters, batteries, charging ports, power supplies and internal components can all cause similar symptoms.
What if the computer powers on but the screen stays black?
The cause may involve the display, memory, graphics, power or startup process. Testing is required.
Can my data still be recovered?
Possibly. Recovery depends on the condition of the storage device and whether continued use has caused more damage.
Do you provide estimates before repair?
623 PC explains the recommended next step and obtains approval before billable repair work proceeds.