#1
I'm now trying to record some guitar riffs on my PC.
But sometimes it sounds really bad because of undesirable sounding of strings...

First issue is that when I'm releasing the string it makes a post-sound, usually not so loud, but audible.

The second one is when I'm playing some note on one string, another begins vibrating in the resonance, which spoils the sound, too.

How to beat these issues? Should I mute strings with my right hand or do something with my left hand?
#2
whar are you plugging your guitar into?

straight to the pc?
Guitars- Gibson SG Stanadard (stock)
Epiphone Les Paul Custom Emg 81/85

Amp- Marshall Jcm 2000 DSL/1960 Lead Cab

Pedals- Boss TU-2, Ibanez TS-9, Boss NS-2, Line 6 DL-4, Boss Ph-3, Boss GE-7
#3
No, I'm plugging it ingo the amp then into the mixer and finally into the pc...
#4
i think you need a "driver" ( dont know the tecknical term) id suggest using a Line 6 ux1

they work well for the price
Guitars- Gibson SG Stanadard (stock)
Epiphone Les Paul Custom Emg 81/85

Amp- Marshall Jcm 2000 DSL/1960 Lead Cab

Pedals- Boss TU-2, Ibanez TS-9, Boss NS-2, Line 6 DL-4, Boss Ph-3, Boss GE-7