boot Bootable Device Issue

[Fratello2466]

I'd like to ask for assistance on an old laptop of mine that seems to be having a weird boot issue. Please advise me of some options, I am an IT onsite support for a company with a little board level knowledge, I am more on software and networking guy. So now the issue that I am having on the laptop is about the startup. I am not quite sure if the issue is the board itself, but I am thinking that it is after trying some of the basic steps to check issues out. 

 

The laptop turn on goes into post and can access BIOS settings. If I stay on the BIOS the laptop can and will stay on for as long as you want it to (even if I don't go into the BIOS and let the laptop stay at the "no bootable device detected" screen it stays on for hours as well), now the issue starts here, after loading the BIOS options to default, I started running a live CD or bootable flash disk into the laptop and it automatically turns off. I can't do anything past that, it detects the HDD, and any other devices attached to it. I am quite sure it is not components (e.g. RAM, HDD, CPU, GPU) that is having the issue (I have tried the parts on different laptop as well aside from the GPU since it is embedded on the board). No overheating is also detected since the laptop again can stay on as much as you want it to as long as it does not detect that there is a bootable device attached to it. PS when the laptop detects that the HDD has a windows installed on it once it start reading the disk it turns off automatically as well. I don't think it is charger as well since I have tested the charger and it works as it should do. 

 

So more ideas before I send the laptop to the trash bin?

[dantayy]

Try re-seating the RAM?

[paddy-stone]

Have you tried a bootable USB stick with linux on it?

[Ryujin2003]

Thermal paste on the CPU could be dry if it's all original. Not much heat needed for BIOS, but could be overheating once it tries to boot. I would ask recommend booting into BIOS and checking CPU Temps in there.

[Fratello2466]

Hi All, Thank you guys for the inputs. But I was able to determine the issue. I needed to replace NEC Tokin on the board to fix it. Seems like it was a known issue these laptop series.