Toshiba L555D Shuts down ONLY when booting from Disk/CD. Stays on in bios and f8 opti

[Blacktek]

this laptop is shutting down while booting from disk or cd, right after the logo shows up starts loading and goes off.
I have cleaned the board throughly. I added thermal paste. tried different chargers.. still same issue.
When i press the F8 button, laptop stays on.
When i press F2, laptop stays on in BIOS Mode.
Please Help!!

[diif]

Sounds like something connected to SATA is faulty/short.
What's the motherboard model number ?

[Blacktek]

Originally Posted by diif

sounds like something connected to sata is faulty/short.
What's the motherboard model number ?

la-5332p

[diif]

There's a free schematic available.

[Blacktek]

Originally Posted by diif

There's a free schematic available.

thanks, any ideas where i should be looking?

[piernov]

Not sure because the symptoms are weird but I would say you have a defective northbridge. Many RS780M/RS880M are dying lately.

[diif]

Originally Posted by Blacktek

thanks, any ideas where i should be looking?

Put la-5332p into Google and click i'm feeling lucky.

[Blacktek]

Originally Posted by piernov

Not sure because the symptoms are weird but I would say you have a defective northbridge. Many RS780M/RS880M are dying lately.

thanks for the input my friend, i was thinking the same thing, i did a little reflow to this chip but it does the same thing.

weird thing is that it stays on forever looking for bootable drives, but as soon as i put in a hard drive it show the windows boot logo then goes off.

[Blacktek]

Thanks guys, I Found the Culprid. I was using a 19v. 1.58A, so i switch to an HP 18.5v 6.5A, and its working without any issues.