Good day folks! I have this Toshiba Satellite L350 - 20G that stuck on its logo upon turning it on, i cant even enter on its bios, just freeze on its logo's toshiba. My SON played just recently on it when it shutdown by itself and upon asking him he played it on his bed making the air vent of the laptop close to air. When i turn it on it freeze on its logo, tried to remove the 2 memory cards nothing happens, tried to remove the HARD drive the monitor goes blackout, just the power on light and the processing lights that are lit up. I sent this to a computer tech and he said that my motherboard  are dead, can a fried or dead mobo still manage to turn on up to its logo? Why can still turn on up to its logo if its fried? And other thing why the monitor goes off when i remove the hard drive? Please help !!If you see the Logo, most of the motherboard is working. Thee are a number of things that might give that symptom.

The most  likely thing is a computer virus

. The hard drive can be removed and tested on a desktop machine that has the right connectors.  I think that Toshiba has SATA drive. It can be checked for virus on a desktop computer by making it a 'slave; drive.

Also, the drive can be checked for bad sectors. In some ACES that prevents the laptop from working.
TNx for the reply Geek.  Id try to test the hard drive but only in an external. Never been tried to put in another pc and used as a slave drive, yup it is  a  SATA drive.
 
When i used it on an external drive the drive name was changed to SYSTEM RESERVED instead of local disk c.

The disk management says its healthy but on its 160 giga capacity 24 giga is used instead of 115 giga that ive already been used, and the most disappointing part is, theres nothing you can see on the drive even a single folder.Your observation would suggest that the motherboard might not be the cause. A rogue program could have done that. As to why people smite us with such PROGRAMS, that is another topic altogether.

Anyway, do you have a CD or DVD that can restore the OS? You will need a **virgin drive that has not been corrupted.

I don't mean that your drive is forever lost. Rather nit has been  really messed with. There is stuff on the drive that can stop the laptop cold and give not explanation. It happens. Really.

For testing purpose, it is better to try a clean drive and see if the
system with come alive. Worth a try. A spare drive is always handy. And costs less than a new motherboard. Also, test the laptop with a bookable USB flash, but no hard drive.

BTW: Few techs in the USA are fully qualified to test laptops PCs.  And that is not just my opinion.

** virgin drive, one that has not been badly mistreated. Sorry for the sexism. Having a drive back to factory condition is the objective. Or even a good used drive will do. Size is not important for testing