Windows 10: i need help with a lot of issues of windows and my system

Hello, I need a LOT of help. so in the beginning I disabled something in the wifi networks and reseted my pc. Then i saw i was connected to a wifi but it said “no connection, secured” i didnt mind so i pressed “sign in” and it said I needed wifi for it. So I went to restore point and there was an automatic one so I pressed that and followed the instructions. Then wifi worked and I signed in and it gave me the usual “create a pin” recommendations. From there I had to go to the bathroom and I came back to see me in blue screen saying “bad_system_config_info” and long story short it gave this lo

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windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx

 

Why did the startup window get cleared?

I didn't missed any step, the list was gone and gone , even after using lot of programs the programs were not listed in that list.

 

Help with unstable system

latest update,
I have changed psu for xfx 750W and keeping to stock values and use on board graphics, the system seems stable , has been for several days. If I try to unleash, then Its prone to occasional crashing.
So next step was to put HD6950 in with CPU in stock setting.
System very unstable again. crashes after about 5 mins.
I have lots of fans , CPU temp ~35deg, HDD ~30deg,
HD6950 ~ 49deg
When system crashes, I dont get bSOD but a grey screen with thin black vertical lines. I then have to re-boot . I get back, Windows reports error with usual 124 error.
Could the CPU be an issue ?
Dont have another to test.
Any suggestions ?
Thank you