Last night I downloaded the BIOS update setup sp57752 - HP Notebook System BIOS Update for my HP Probook 4520s laptop.. During the installation, when the software was displaying something like writing block 400 / 640.. the power malfunctioned and the laptop turned off.. (The battery was very low and my UPS was not working).. Anyways, right then I knew the laptop was bricked. I restarted the laptop and this is what happens..
- The display stays off.
CAPSLOCKkey light keeps blinking.
- The power button doesnt do anything, even if held down for 30 seconds or more. The only way to power off is to disconnect the battery and the charging cable.
I know I'd most probably need to take the laptop to HP customer care.. But I was wondering if there was ANYTHING I could do myself to fix this issue.. I know how to disassemble the laptop.. I know how to take out the RTC battery.. I wanna know if it'll be sufficient.. Or will it require special hardware cables / serial ports / etc and proprietry procedures that only an HP technician will be able to perform..