If the drivers are installed try plugging into the front audio port and try the sound there. If you get sound from there it sounds like your back port is bad. Which would require a new motherboard. Try the front port and drivers.
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A steady or Amber blinking power button indicates a low voltage problem. This can be caused by a defective power supply or a defective motherboard. Just to make sure that nothing else is causing the problem, remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. Look at the USB ports to see if any are damaged.
From the computer sound output to the speaker input ... you are right it should be pretty straight forward. Is the vol turned up? Can you test the speakers with a portable radio of some kind? Is there a power supply that needs to be hooked up and does the power supply work?
Are the speakers plugged into the correct jack (audio out, not line in)? Check if the speaker cable is damaged and try replacing it if the wire is not fixed. If the speakers are self-powered, check if the transformer is warm (using power). If it is cold, look to see if the specs are given - you may be able to find a universal power supply with the right voltage and amperage at a shop like Radio Shack.
If the speaker wire is fixed, you may be able to open up the speakers and desolder the wire and solder in a new one. However, on low-end speakers, the fix is takes more time than the speakers are worth.
It sounds like that it is your power supply. A power supply you can expect to pay $30 to $40. The best thing to do is take your cover off and unscrew the power supply and take it to a computer store. Not really Best Buy more like Microcenter or even Better a small computer shop ... they sell power supply. It may seem a little intimadating but it is realitively easy... once you have the case open follow the power plug to the cdrom or one of the hardrives to the bigger silver box that has the fan on it. Unscrew that... take it to the shop with you and let them know that you need a power supply that has the wattage equal to or greater than what you have. Don't be intimidated.... if you can fix this yourself you will save yourself about $80. Good Luck... Hope this works out for you! Pay attention how you unplug everything cause your going to need to plug the new one back in and screw it down.
I hope this helps!!!
If your computer will not power on, no matter where you plug it up in the house, then it sounds like you have a blown power supply. If you can find a power supply (exactly like the one that's in there) then you should try replacing it with the one in your computer. If that fixes your problem then you know that's what was broken...the power supply inside the case.
Usually when a computer won't power on at all, it's because the power supply has gone out and must be replaced. If the power supply has gone out then there is nothing that you can do to get the computer back on except to replace the power supply. You might even be able to take it into a computer shop where they will diagnose at no charge...just to confirm whether it's the power supply.
my Sound card is uninstall. tall me how i re install it.(i don't have driver c/d. its missing.)my pc model no is (Compaq Business Audio driver for window 98 In Intel(R) 82810.).my email id is firstname.lastname@example.org
Hello...activate volume control panel from your windows..and make sure that the wawe,cd,digital and output is not marked with any "x" which means sounds off..than adjust to about 80 percent volume for each control...but be sure you have the speakers connected to the right contact on your soundcard...it should be..purple with/or an arrow out symbol...plase tell me how it went...good luck...Ron