When I upgrade my RAM (DDR2) on an old HP 6730s laptop from 1x2GB to 2x2GB my sound will stop working (W10). I was able to get exactly the same DDR2 card, hoping that all frequencies, timing and everything will match, but apparently NO. Laptop should support up to 8GB, any ideas what might be wrong, what am I missing, that those cards are not compatible?
Cards: Samsung 2GB 2Rx8 PC2-6400S-666-12-E3, M470T5663EH3-CF7
Edit I:
Sounds is not working only when both cards connected, works one by one
System: W10Pro x64 (verified)
Edit II:
Device manager shows same values for soundcard with 1 and 2 cards
Unplugged battery does not help
Edit III:
I tried to boot from Linux USB live distro and the sound is working!
Tried the first restore point after clean W10 installation, nothing, could it be the system wrong installation?