able to watch videos, but no sound available

[bebeto]

on sites such as youtube.com and google video, i am able to watch the videos, but there are no audio sounds available.  same with sites like myspace, can't hear any music coming from ppl's pages or from juno.co.uk, i can't hear samples of artist's music.  if the site is windows media player based, i can hear the music.  no problems hearing my own mp3s.  i've tried on both IE and firefox

is it a macromedia flash problem? i've been troubleshooting through that, installing, uninstalling, reinstalling, etc.

or is my system missing something that i don't know about....?  this could be the case as i had to get a whole new motherboard done.  old drive was saved, but i'm not sure if everything was installed back correctly.  

i'm sorry is this is the wrong forum, i didn't know where to put this question...


any help is greatly appreciated, thank you in advance

p.s. please use simple pc talk as i obviously don't know much about computers!!!  

[honvetops]

post (all) your hardware specs below with your operating system;  they need to know what your working with*

[bebeto]

'm sorry, didn't realize i had to add more info..so this is a hardware question then?

and hardware specs: (this?)
computer: ACPI Uniprocessor PC
disk drive: ST3802110A
display adapter: SiS 651_661FX...
dvd/cdrom drives: SAMSUNG CD-R/RW SW-252F
Floppy disk drives: standard
human intervace Devices: USB Human interface
IDE ATA: Primary IDE Channel, Secondary IDE Channel, SiS PCI IDE Controller
keyboard: standard 101/102
net work adapters: SiS 900-Based PCE Fast Ethernet Adapter
Ports: com1, LPT1
Processors: Intel(R) Pentium 4 CPU 2.20GHz 2.19 GHz, 496 MB of RAM
sound, video, game: audio codecs, legacy audio drivers, legacy video capture device, media control  devices, realtek AC'97 Audio, video codecs
system devices: ACPI fixed feature button, direct memory access, ISAPNP read data port, microcode update, microsoft ACPI-compliant, Microsof system managemnt BIOS, motherboard resources, numeric data processor, PCI bus, standard host CPU bride, ISA bridge, plag and play software device enumerator, programmable interrupt controller, SiS aceelerated graphics Port, system board CMOS speaker and timer
universal serial bus controllers: SiS 7001PCI to USB Open Host controller, USB root hub

hope this is it..thanks

[Rob Pomeroy]

It's probably a CODEC problem.  Click on the software link in my signature.  Scroll down that page to the multimedia section.  Install "The-Codecs".

[bebeto]

unfortunately, that didn't work..
thank you, though

[Demache]

Maybe your sound driver was corrupted? Reinstall it or update it (if possible). Maybe the computer's ability to play .wav (Wave) files is impaired. Macromedia Flash needs Wave drivers (or whatever) to play sounds.  :-/ I dunno. Give it a shot.

[Rob Pomeroy]

Wave drivers

Something like that should (theoretically) be fixed by the CODEC installation.

That Realtek AC '97 Audio is a fussy blighter.  You MUST ensure that you have your motherboard vendor/PC manufacturer's specific sound drivers installed.  What make and model is your new motherboard?  If you need help finding that out, use one of the system information programs from the software FAQ.  (System Information for Windows is my current favourite.)