Hi! I wonder if anyone can help me with this as I have no idea what could be causing this. I have played with it so much I can be fairly precise about its behaviour so please excuse me if I overdo it on the description.
I have a Samsung RC-520 (less than a year old) which resets the time and date back to oct 2011 00:00 when rebooted. This only occurs if its been of for more than 5 seconds, any less and it remembers. I immediately assumed a dead BIOS battery was to blame and because the customer wrongly lead me to believe it was within warranty I dissasembled the laptop and replaced it. This did not solve the problem.
So here are the other things I have tried:
Reset BIOS back to default.
Updated to 'Firmware' 18.104.22.168 via windows installer.
Replaced hard drive, ram and removed optical drive (clutching straws
Tried with battery out / without mains power.
Reset the time in Windows 7
Here are some things I have noticed:
To test whether or not the BIOS was resetting I changed the lower 3 boot orders from 4:USB FDD, 5:USB HDD, 6:NETWORK to 4:NETWORK, 5:USB FDD, 6:USB HDD. This does not change, so as far as I know, only the time and date do.
If the time/date reset (laptop off for more than 5 secs) then the laptop does not start properly 1st time. Instead I get a blank screen and the power led lights and that's it for 15 secs. After that the power button led comes on and I hear the optical drive engage but still nothing on screen. So then I have to hold the power button down for 5 secs to power off and then (as long as I'm faster than 5 secs) press the power button to find it turns on and boots to windows as normal.
So does this ring a bell with anyone? Maybe I should take the BIOS battery out again and leave it overnight with no power to completely reset it? Can't see how this could be hardware. Very strange!