Quick question although fixed

[DXP55]

I built a backup PC around 2015 built around AMD A1 chip and board and W10 Pro - It's worked perfect till a few weeks ago when screen started to pixelate -drop to black screen or give me meassages it can't access PC.
My first thoughts were Graphics card then last night I thought this PC never gets switched on for weeks or months so wondered if battery has died.

Today I removed graphics card and changed battery and it now works fine again.

What I don't know other than putting GC back in was my fault the card or battery. Would a faulty battery give the symptoms described.

The GC came out of my main PC which I built in 2013 - so it's now 9 yrs old.

 

[DXP55]

Just turned it on and WOW - it's back to normal - Before I had to hit F1 or F2 which took me into Bios where I just exited without changing anything - then it let me in to home page - It does all that now without pressing anything.

So whatever it was seems to be a blessing as I wouldn't have done any fault checking - Can't see any difference between GC and built in graphics.
The chip is AM1 (I put A1 in OP).
I can't believe it's running so much better.