Thanks for the welcome and the reply. I was in the process of answering your questions and I got a BSOD crash. Here's the criteria:
Event 41 'Kernel-Power'. Here's the info from Blue Screen Viewer-
080115-15444-01.dmp 8/1/2015 10:01:01 AM PAGE_FAULT_IN_NONPAGED_AREA 0x00000050 fffff900`80850258 00000000`00000000 fffff800`0303ba8e 00000000`00000002 ntoskrnl.exe ntoskrnl.exe+72a40 NT Kernel & System Microsoft® Windows® Operating System Microsoft Corporation 6.1.7601.18798 (win7sp1_gdr.150316-1654) x64 ntoskrnl.exe+72a40 C:\Windows\Minidump\080115-15444-01.dmp 8 15 7601 281,000 8/1/2015 10:01:58 AM
OK, back on topic… here are the answers to your questions-
1) Fine, and with Networking, too.
2) Fine
3) No, I haven't
4) Haven't thought of that
5) Well, I am in the process of doing that. I have upgraded RAM to 32GB, and next I wanted to install an SSD- as soon as I can get this OS cleaned up to migrate. I'll need to buy a bigger, and better, PSU first, as well- this one's marginal, and is of the cheap OEM Chinese junk variety.
Before we go any further, let me tell you that the only Windows installation media I have is a) a set of 4 HP Recovery disks and a Recovery partition (D:\) on the HDD and b), a DVD that I burned from the Digital River download before MS shut it down. It has all 4 Windows 7 editions on it (My Pro SP1 x64 is #3 on the list) and it's the same build. My question on that matter is, will that work with the license key on my computer case?…Hypothetically, it should. I was having some 'sfc /scannow' issues with a corrupt .dll- 'iesysprep.dll'. I extracted the affected sources from the mentioned disk and replaced them on the factory install. Didn't hurt anything, but the hash mismatched- no doubt due to the corruption. Eventually, I found the culprit to be IE11. After uninstalling IE11, and downgrading to IE10, I get clean 'sfc /scannow' results. So, clearly, there's something amiss with IE11- or so it seems.
We have run Windows Memory Diagnostics, MemTest86, and Seagate SeaTools diagnostics and everything passes just fine. I have used Speccy and CPUID to monitor the CPU temps, thinking that because I run off the CPU's GPU architecture (HD4600) heat may be an issue. Haswell's do inherently run a bit warmer than Sandy and Ivy Bridge families, but we are in the 'mean' zone of the thermal scale.
The graphic driver issue isn't consistent. The machine will run fine for a week or so, and then it goes into a season of these crashes. I see warnings and errors in Event Viewer that have me scratching my head as well, but they aren't a direct result, I don't think, of this Event 4101 'igfx' issue.
Hey, I just want to say thanks a bunch for your involvement in the matter. I certainly would like to get it resolved. As an engineer, I can't stand, nor tolerate, this nature of inefficiency!…

Kind Regards-
tim