I recently tried to downgrade my Dell Studio 1558 Laptop from A12 BIOS to A11 Version and flashing was in progress then after a while the display showed a message that the computer will be turned off to protect the components from overheating. After this the computer just won't start, the power led doesn't turn on, fan doesn't work, display doesn't work, etc. When I press the power button the led indicator near it which shows when the battery is charging blinks couple of times and that's it.
I tried the Phoenix WinCrisis tool to recover the BIOS but no luck - I followed the procedure, removed the battery, connected bios flash usb, pressed the end key and then connected the power cord and waited for few seconds but no activity and then tried pressing the power button but still no activity.
PLEASE HELP.