So sorry, about the delay. Life got in the way. Below, I will list a series of steps that I took to diagnose the issue, and where I am now.
-I installed Windows 7 Pro x64, on the Lenovo. The machine ran smoothy, and did not shut off by itself once.
-While MS Windows was installed, I tested the following:
GPU-Tested with Furmark, and Unigine's Valley Software. No issues were reported.
CPU-Tested with the Intel Processor Diagnostic Tool, and Prime95. While using the IPDT, the only test that failed, was the 'brand string.' However, the CPU passed the torture test, supplied by Prime95.
RAM-Tried alternative sticks, from a fully functional laptop, and ran the Windows memory diagnostic tool, on the main sticks that I was using. No issues were detected.
-I ended up using the Lenovo Diagnostics 4.7.0, to test the health of the mother board, chipset, PCI/PCIe, RTC, and the USB ports. All passed with flying colors.
-I even looked for a firmware update, on the wireless mouse, that I use with the system
-I upgraded the firmware, on my internal Kingston SSD. The SSD, was also in perfect health.
-I generated a power report, using the Windows 7 command prompt, by using the following commands:
Results show that the the battery is in perfect health, and the power analysis was successful. No energy problems were detected, on the system.
When these 'power outages' were occurring, Ubuntu 14.04 was installed. Everything that I read told me that Ubuntu could not have been the source of the problem. After installing Windows, and ensuring that the internal hardware was in good health, and that the battery did not have any problems charging (I even tested two separate batteries), I am brought back to my original gut instinct. Ubuntu, was the culprit. Now, I already have a couple of Windows machines, and I did not want a third. I installed Windows 7 pro, specifically to test my theory. Once I found out that everything was running smoothly, I went ahead and installed a later Ubuntu release, Ubuntu 16.04 Xenial Xerus. The install went smoothly, and the system has not shut off. However, I am experiencing some of the same power issues, that I was having while Ubuntu 14.04 was installed. I forgot to mention this in my original post, but I did not just turn the system on one day, and it started shutting off. I noticed a series of steps, that eventually led to the system not being able to stay on. One of those steps, was that the battery refused to constantly charge. Eventually, it would just stop charging all together. So, I have my machine, with the SSD formatted, internal hardware thoroughly checked, and monitored, Windows wiped, and an alternative/later release Ubuntu installed...the once fully functional, healthy machine, is once again experiencing unknown power issues. For one day, while the AC cord was plugged in, the battery would charge, only when it would want to. Now, the battery is not charging at all. These are some of the same exact symptoms, that I was experiencing, while Ubuntu 14.04 was installed. As stated, as time progressed, the system eventually shut off. I have been searching, and searching, and the only solutions/explanations that I have been able to find, say that:
1)My problem is caused by failing hardware, or a dirty machine (Not the case)
2) There is no way that Ubuntu can cause this to happen (I disagree, just have not been able to produce evidence)
3) It may be a Kernel issue. Why don't you try to run updates, or upgrade to a newer release. (Tried both. and the issue remains)
The next step, in this journey, is to try out a few Linux distros on the Lenovo, and hope that I don't have battery, or power problems. This machine, ran Ubuntu for a good while, before I had to experience any power issues. I just cannot find any other explanation, besides a software related issue. Would you happen to know of any?
Thank you, for your time.
Edited by beachfeet, 20 August 2016 - 01:10 AM.