Last night my presario f700 was downloading an update, i couldn't tell which one it was but it was updating during a shutdown. We had a storm come through so I had to unplug the power to the laptop. It might not have been all the way through the update when it lost power but the screen was black and there was no HD activity.
Now when I try to power it up, the power light comes on for one second and shuts off, no fan, no HD spinup, no DVD access, no screen, nothing else. Maybe corrupted bios? Is there a fix or am I just screwed and it's motherboard time??? i've tried holding the power, scroll and insert keyes for 20 seconds no go. holding the power button with it unplugged for 20 seconds also no go. I checked the power supply and it's fine.
This is a replacement motherboard that I purchased on eBay and it's been working fine for a week now. I took it apart again last night but same symptom.
it happened to me first I thought it might be short circuit in usb hub
after taking it apart and powered it . it came to work normaly .
then after put it back together the same problem came back
Now it is working without tighting the screws for more than a year.