It could be the drive failed, can you boot to BIOS at all? I'd recommend a USB Drive adapter, then pull the drive from the laptop, connect to the adapter and then plug into a working PC USB port (Be sure that PC has good/current antivirus and firewall software and it has been backed up itself). The disk should then come up and look like a regular flash drive. Recover the critical files, then back up onto something like a CD or DVD that is set aside for safe keeping. Now you can be a bit more adventurous - potentially the BIOS settings changed, or the on board battery is dead and needs changing (can be complicated). There are also bootable drive recovery utilities that you can spin onto a CD. But data recovery is always first.
that sounds like a power problem to the mainbaord. I hope you backed up recently. See if you have any clogged fans with dust or bloated capacitors. You may need a new Power supply and mainboard. I would put the hard drive as a secondary in a new machine.
Error codes are only of use by the Toshiba Technical staff and of no use to you as the consumer.
If you report that to the Toshiba Technical personnel, they can transcribe the error number for you.
If a blinking light comes on when charging, sometimes it indicates No Charge or the power cell inside the computer is not accepting a charge and will not function. You might replace the power battery if it has been in there for several years. They do tend to die after a while. As for the computer, it should operated without the battery. If it fails to boot when the power adapter is plugged in, then one of two issues are common. 1, the power adapter is faulty and needs replacement. 2. the computers CPU may be damaged by a power surge and that is bad news.
Not sure about specifics on toshiba tablets, but wanted to suggest that on other tablets you can hold the up volume(sometimes others its volume down) and power button at sane time for about 10+seconds and a menu will pop up for a rebooting, safe mode, and factory restart(which erases and reboots from scratch) worth a shot.. Yet, be careful what you select if it works.. Don't want you to erase stuff if you don't want to.... And btw most tablets have a little pin size hole either under the camera lense or on side that something like a paper clip can push a reset button... But don't think that helps with password.. Just if it freezes up and won't shut down... Good luck.. Sorry if this doesn't help...