Power ON and working maximum 5min and Power OFF instantly and within 3sec again Automatically power ON.
This happend in BIOS / Windows / without HDD & without Battery also (with direct power adapter)
I changed
RAM, CPU, HDD, Tested without HDD, Re-install Thermal Paste, CPU Fan & Tested with Extra Cooling Methods. But no luck. I think this may be Motherboard Chip issue or a BIOS issue.
I heat Northbridge with a Hot gun also, but no luck.
Any expert please support or suggest.
Thank you..