This is for Feedback --
Finally located a MoBo supplier with testing facility to run a test on my MoBo/CPU/RAM/SSD.
It passed the test. MoBo / CPU is flawless. The PC hardware is OK.
So is Win Vista Starter 32 bit License key.
Also, the fact that hardware is OK means Win 10 can be installed anytime in future.
Next ... why was it getting BSOD after BIOS update/flashing, proper OS installation, Drivers and tweaking SSD and optimizing Services and Start Runs....
..after cleaning PC of all virus, malwares, etc....
...registry settings for SSD Drive icon in tray, Reg settings for AHCI, Power Management Settings for High Performance with Never Sleep / Never Hibernate, etc.
that is .. BSOD error A5 (11,06,00,00)
SCI_EN never becomes set in PM1 Control Register ? --
--- in general -- is due to BIOS/Vista cannot take more than 15 tasks at a time.
and other reasons ... requiring good maintenance.
What took very long to find out was-- BIOS settings> Integrated Peripherals>Onboard IO/Address > Onboard Parallel Port --- Disabled.
This needed to be disabled. Then there was no BSOD.
Lastly... in maintenance & repairs -- HDD had 40 bad sectors --> replaced with SSD
Mouse left click stuck ---> replaced mouse
Monitor menu buttons/ circuit burnt ---> replaced Monitor
Power Supply Unit --> Blown / swollen capacitors --> replaced PSU
Spike Guard faulty --> replaced Spike Guard
Upgraded RAM from 2GB to 4 GB + RAMDisk
What caused all of the above ? A sudden surge in power inside Computer --
--June to September -- Monsoon --
Lightning may have caused a power surge causing the above damage and BSOD.
Started a thread in Sysnative for Win Defender Updates not coming through Win Updates (since June 2018)...
... then moved to BSOD thread...and complete repairs ends here.
PC is working without BSOD for last 4 days... good enough test to say -- ALL IS DONE!
All in all -- Hardware repairs were attempted for the first time.
A very tough part was to find proper technicians and hardware stores in locality.
Gone through too much of negativity and skepticism.... a drag... but after taking breaks kept coming back to continue repairs.
Thanks a lot to Sysnative Forum for giving an opportunity to make this attempt of Confidence building exercise on a computer -- a left out but much needed experience
without which going on from Win XP to Vista and then to ..... say Win 10 would have been nothing more than a stampede... a mad rush.
All this for learning, .... yes... Sysnative Forum kept a lot of patience... it was a test for me.
Thanks for standing-by. It took too long... but Next Time... Next Time... I will be able to do it all by myself!
Nothing is as thrilling as success and a feeling that I can do it... I did it... a soaring confidence.
You may put your final remarks before marking it as RESOLVED --