for first, can you answer, how did it happen? Or, is there any helpful information which can help with the solution?
It’s look like BIOS stuck or just RAM bug, try:
- Reset your bios using CMOS reset (disconnect power, battery and the small battery on the MB, if it’s model without battery on the MB, try to press the power button for about 30-60s and then it may be work - or pressing)
- Unplug your RAMs and clean slot, then, insert only one (if you have more) and try to turn on, if nothing, select another slot
- Disconnect your HDD and try to boot without it
- Check cables from MB to display
It may be the only bug, but we need to know if the laptop is turning on without cooler start if the HDD is working while the laptop is about to start.
If nothing worked, write more description of your issue to comments.