Toshiba L455 Won't Boot
I've been leaning computer repair stuff under my dad, and he just gave me a Toshiba Satellite L455 to fix. The owner said that o e day they turned it on to find the BIOS saying something like
System BIOS Shadowed
Video 1 1
Then another time it said
System CMOS Checksum Bad
Default Configuration Used
Now the laptop refuses to boot. The hard drive is fine, and some messing about led to me realizing that the laptop behaves the same way whether or not there's any RAM in it. When I plug it in, the CD drive light stays solid and when I press the power button the fan whirs for half a second and then the machine becomes unrsponsive.
I've tried the hard reset method where you cut off all power and hold the power button for 30 seconds then try booting it again, with the same result.
Is this system fried? Could the motherboard be screwed?
I'm worried I'll be unable to fix this machine for the customer.