First since it is a new computer please make sure you have your speakers plugged in to the proper jack (assuming they are not USB speakers) - for my computer brand it is color coded green but yours may be different. Also see if your speakers require an external power source and if so make sure that is properly connected. Then there are at least three possible volume controls - 1. physically on the speakers themselves you may have a volume knob, crank it up. 2. Programatically, the speaker volume - i use a speaker icon in my system tray or the media control keys on my keyboard to turn this up and down. 3. The Mixer wave settings, this is what windows media player actually uses and can show 100% even though speaker volume in 1 or 2 may be very low.
If the speakers are connected and powered properly and all 3 of these volume controls are turned up then if you cannot hear any sounds from any source properly you may have sound driver problems, a bad soundcard, or bad speakers. If other sources play fine then your CD may have been recorded at an extremely low volume.