In case anyone has any ideas.. BIOS Freezing..
One friend asked me to see a very slow laptop with strange behavior on windows.
In fact the laptop is old, it was very badly treated and the strange behavior is because the keyboard is broken (random cursor movements in windows).
But it also has a broken DVD Drive, which causes a very slow BOOT at the beginning and for this reason I physically disabled it (I removed the Sata connector that connects to the board)
The notebook must have been dropped a few times, some liquid must have been spilled and it must have caused damage to the keyboard and some rust inside. But the board was working fine (apparently).
As everything was very dirty with dust and so, I took everything out to remove the board and give it a cleaning with isopropyl alcohol and a contact cleaning spray, I replaced the thermal grease that was already dry and reassembled everything.
I noticed that the battery (soldered on the board) was at ~2.2V, so I invented a more practical support to replace it with a new one of the more common type.
I mounted everything again and honestly I wasn't expecting this, because I didn't change anything, except to remove the DVD and change the battery. Ok I cleaned the board superficially and so but I didn't damage anything.
Initially, the board did not turn on, the charger lights up, the board has the charging light on (it turns green without the battery and flashes orange with the battery installed), but when pressing the Power button, the corresponding light turns blue during about 5 seconds and then it turns off. No matter how many times I pressed the button, it always did this... nothing turned on, no fan or LCD, nothing.
After a few attempts, between Resets, testing with and without memory, disk, etc etc, she decided to turn on. But it always enters the BIOS, if you try to set the Date\Time or 'Load Defaults' and save, it blocks. The next time I turn it on, it goes back to the BIOS again but it's locked, there's nothing you can do. The time and date is always the wrong one (the one I set before).
I can't get it to BOOT, the disk is detected correctly but it doesn't appear in the list of boot devices, it's empty.
Now I don't really know what to do, pressing the Power button may do nothing (initial behavior) or it starts in the BIOS. I test without battery, i soldered the original one again.. but no success.
When enters the BIOS i have no way to choose the Boot order, because nothing is listed (however it detects Disk and Processor well...) in the BIOS initial tab..
If testing Load Defaults for example and doing SAVE blocks\freezes. I have to do that Hard Reset ("JCMOS""RTC RESET") and it starts all over again.. :\
Will reprogramming the BIOS fix it? I already bought a programmer but it hasn't arrived yet.
It could be associated with the RTC clock and the CMOS\BIOS circuit... I have no idea.
Thank you!
One friend asked me to see a very slow laptop with strange behavior on windows.
In fact the laptop is old, it was very badly treated and the strange behavior is because the keyboard is broken (random cursor movements in windows).
But it also has a broken DVD Drive, which causes a very slow BOOT at the beginning and for this reason I physically disabled it (I removed the Sata connector that connects to the board)
The notebook must have been dropped a few times, some liquid must have been spilled and it must have caused damage to the keyboard and some rust inside. But the board was working fine (apparently).
As everything was very dirty with dust and so, I took everything out to remove the board and give it a cleaning with isopropyl alcohol and a contact cleaning spray, I replaced the thermal grease that was already dry and reassembled everything.
I noticed that the battery (soldered on the board) was at ~2.2V, so I invented a more practical support to replace it with a new one of the more common type.
I mounted everything again and honestly I wasn't expecting this, because I didn't change anything, except to remove the DVD and change the battery. Ok I cleaned the board superficially and so but I didn't damage anything.
Initially, the board did not turn on, the charger lights up, the board has the charging light on (it turns green without the battery and flashes orange with the battery installed), but when pressing the Power button, the corresponding light turns blue during about 5 seconds and then it turns off. No matter how many times I pressed the button, it always did this... nothing turned on, no fan or LCD, nothing.
After a few attempts, between Resets, testing with and without memory, disk, etc etc, she decided to turn on. But it always enters the BIOS, if you try to set the Date\Time or 'Load Defaults' and save, it blocks. The next time I turn it on, it goes back to the BIOS again but it's locked, there's nothing you can do. The time and date is always the wrong one (the one I set before).
I can't get it to BOOT, the disk is detected correctly but it doesn't appear in the list of boot devices, it's empty.
Now I don't really know what to do, pressing the Power button may do nothing (initial behavior) or it starts in the BIOS. I test without battery, i soldered the original one again.. but no success.
When enters the BIOS i have no way to choose the Boot order, because nothing is listed (however it detects Disk and Processor well...) in the BIOS initial tab..
If testing Load Defaults for example and doing SAVE blocks\freezes. I have to do that Hard Reset ("JCMOS""RTC RESET") and it starts all over again.. :\
Will reprogramming the BIOS fix it? I already bought a programmer but it hasn't arrived yet.
It could be associated with the RTC clock and the CMOS\BIOS circuit... I have no idea.
Thank you!
reprogram the BIOS chips did not solved the problem.. 
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