Scratchy sound when turn on and volumn

Sounds like oxidized contacts.
If volume is a turn-knob, then wiper-track (inside potentiometer) is worn.
If it's a PTM (push-to-make) standard button, the button contacts may be dusty/dirty/oxidized.
Suggest you:
buy a contact cleaner such as Servisol,
open case,
identify controls
and squirt liberally to wash out any gunk.
Move/press/wiggle scratchy one to help 'scrub' the contacts clean.
If this doesn't help try have control replaced.

click start control panel sounds and audio devices you can adjust the volume there also select speaker volume you can change your settings there you can also tick in the box place icon in taskbar
hope this helps

you may have a bad volume + switch. the switch would need to me replaced.

The dual XDDVD710 RADIO has a volume memmory (it seems), it will go to the last volume setting that it was set to, not play to,(supposly to keep it from blasting you when you turn it on and you forgat u had the volume on blast).
To set it,
1 turn radio on,
2 turn the volume to desire Level you whant it to go when you turn it on (other Levels besside BLAST hopefully) ,
3 push the volume button in, that should do it.
Now you can play your music loud and should you forget that you had it on BLAST (to over come road noise) when you last played your radio, it should start at the preset volume.

probably.
almost sounds like your speakers are worn out, and when you turn the volume up, they clip n no sound comes out.

If it makes a scratchy sound when the volume is turned up and down then the carbon contacts on the volume control are most likely the culprit you can attempt to clean them with rubbing alchol and a Q-tip.

Use an electronic contact cleaner. You need to shoot it inside the pot through the openings. Then rotate many times. This will remove oxidation on the contacts inside. If you don't use a contact cleaner, turn of f the radio and rotate many times the potentiomer left-right-left-right ...When you turn it on again, you will see the scratcy sound will be reduced but it will come back eventually. The more often you rotate, the less noise it will make. This is a very common problem, nothing to worry about.

both switches need a good ceaning. go to radio shack get some contact cleaner. Make sure the radio is off take off the back spray contact cleaner into the switch while turning them back and forth. wait till dry.

if there is a menu button or something like it look for avc auto volume control set to 0

go to radio shack near you and buy a contact cleaner(64-4315)----apply the contact cleaner in volume and move it forward and backward until you get good sound if this failed you must change volume control.