A: Disconnect everything (battery, AC, hard drive, RAM). Hold the power button for 30 seconds. Reconnect only AC and one RAM stick. Try to boot. If still dead, you need professional recovery via SPI programmer.
Restart your laptop. Press F2 repeatedly during boot (before the Windows logo). Inside the BIOS menu, look for "BIOS Version" (e.g., 6.60 or 1.40 ) and "Product Name." toshiba satellite c50-a bios update
A: Absolutely not. The C50-B has a completely different chipset (Intel Bay Trail vs. Ivy Bridge/Haswell). Flashing it will destroy your motherboard. A: Disconnect everything (battery, AC, hard drive, RAM)
Flip your C50-A over. Look for a sticker labeled "Model No." It might say something like PSCB6U-0R803X or C50-A-1E2 . A: Disconnect everything (battery