When I turn on My laptop the laptop’s fan speeds up to max speed it can go at and the caps lock light is blinking and the screen doesn’t turn on

[PlanetHamburger]

 

[ramussons]

If it is a HP laptop (or any other), it normally means a Power issue.
Visit to a service centre may be a must.

 

[Mark Fuller]

The processor generally uses a heat sensor to determine the speed of the fan. The hotter the CPU gets by whatever load you put on it, the faster the fan runs, like a thermostat keeps a house cool. If your fan is running at full speed and you aren't using many applications you might have the fan clogged with dust or a hardware failure. Check your laptop manufacturer's documentation and see if the blinking caps lock light is an indication of a hardware failure like a beep code is for some memory issues on some pcs. Also, there would be a diagnostics program you could run on bootup depending on the manufacturer. Maybe just a clogged fan best case scenario, worst case scenario hardware failure. If you do run a hardware diagnostics program don't forget the lcd issue too.

 

[ramussons]

The processor generally uses a heat sensor to determine the speed of the fan. The hotter the CPU gets by whatever load you put on it, the faster the fan runs, like a thermostat keeps a house cool. If your fan is running at full speed and you aren't using many applications you might have the fan clogged with dust or a hardware failure. Check your laptop manufacturer's documentation and see if the blinking caps lock light is an indication of a hardware failure like a beep code is for some memory issues on some pcs. Also, there would be a diagnostics program you could run on bootup depending on the manufacturer. Maybe just a clogged fan best case scenario, worst case scenario hardware failure. If you do run a hardware diagnostics program don't forget the lcd issue too.

Seems that the computer has not yet come on. It is not likely to be a hot CPU.

 

[Mark Fuller]

Seems that the computer has not yet come on. It is not likely to be a hot CPU.

The fan spins and lights blink which indicate that power is being supplied to the pc, granted the cpu might not be involved, especially with a blank lcd.

 

[ramussons]

The fan spins and lights blink which indicate that power is being supplied to the pc, granted the cpu might not be involved, especially with a blank lcd.

On a normal startup, the Caps lock will NOT flash continuously. The keyboard lights will flash once.
A flashing Caps Lock is a sign of power issue.

 

[Mark Fuller]

A flashing caps lock is a sign of a power issue. He did not specify manufacturer. It looks like it could be an HP. If it is, https://www.pcwebopaedia.com/laptop...ettings – BIOS or,HP Caps Lock Blinking issue.