My laptop just suddenly shut down when in use 2 days ago 
. Then when I pressed Power button, it just kept switching on and off repeatly without going into boot mode at all. After reading some posts on internet, I removed the battery from the motherboard and main battery for 45 minutes, and put the main battery back on again. The laptop could then be boot and went into Windows Vista Home Premium (32). But after Windows Restart, same switching on/off started again. The only way to start Windows was to drain the power completely from the machine (motherboard battery, main battery and AC power all disconnected).
Before the sudden death, the laptop had been unstable for about 1 to 2 weeks, e.g. sometimes Device Manager did not detect CD/DVD Drive, sound lost during operation, etc.
Now I cannot access to DVD Drive (I'm sure it is still working, just not controlled by motherboard and Vista). I have system recovery files on USB stick, but the default boot sequence put it after optical and hard drives. I can only access to Windows after the first boot. After shutting down and restarting Windows, the switching on/off happens again.
What else can I try to save it before I break it down and sell the components on ebay
? Does it sound like 99% motherboard or BIOS failure, which cannot be fixed? I tried installing different versions of BIOS, but it did not work. At the moment, Windows Update does not work, Windows does not detect any sound device installed, but I can still access to internet with wifi or cable. Thank your for any advice in advance.
. Then when I pressed Power button, it just kept switching on and off repeatly without going into boot mode at all. After reading some posts on internet, I removed the battery from the motherboard and main battery for 45 minutes, and put the main battery back on again. The laptop could then be boot and went into Windows Vista Home Premium (32). But after Windows Restart, same switching on/off started again. The only way to start Windows was to drain the power completely from the machine (motherboard battery, main battery and AC power all disconnected).Before the sudden death, the laptop had been unstable for about 1 to 2 weeks, e.g. sometimes Device Manager did not detect CD/DVD Drive, sound lost during operation, etc.
Now I cannot access to DVD Drive (I'm sure it is still working, just not controlled by motherboard and Vista). I have system recovery files on USB stick, but the default boot sequence put it after optical and hard drives. I can only access to Windows after the first boot. After shutting down and restarting Windows, the switching on/off happens again.
What else can I try to save it before I break it down and sell the components on ebay
? Does it sound like 99% motherboard or BIOS failure, which cannot be fixed? I tried installing different versions of BIOS, but it did not work. At the moment, Windows Update does not work, Windows does not detect any sound device installed, but I can still access to internet with wifi or cable. Thank your for any advice in advance.
