I have an acer aspire 4736Z motherboard model KALG1 LA 5271P REV 1.0 2009 machine support DDR3 RAM. After working everyday 10-14 hrs per day from 2009 till now 2019 it working
fine. One problems is that when electric goes or unpluged power adapter or disconnected from AC my laptop suddenly shut down at any time any moments.
Batter is good and replaced and checked my battery another acer laptop working fine. and another new battery also attached with my laptop but problems remained same.
Please give me what cause this issue. It works on electric smoothly. get shut down any time when unplugged from Ac or electric goes of.
1. Batter okay checked with new battery
2. Ac adapter checked no issue
3. Format done new Hard drive installed and fresh Windows 7 on it.
4. fresh Windows 7 installed but not solved.
Please suggest me which part of the motherboard is defected so that I can repair it ..