Mac not connecting

It sounds as if your power connector is not seated correctly
See error light codes in this manual
http://support.dell.com/support/edocs/systems/op960/en/setup/setup_en.pdf

The gtx 690 is not supported by Mac OSX. GTX 680 is the highest supported card as of today.

What sort of speakers are they, USB connected or Line-out connected?
On your Mac, open System Preferences (from the Apple Menu or from the Dock), locate Sound (normally the last icon in the second row) and it will list all the available audio outputs available to you. Mine lists "Internal Speakers - Line Out - Digital Out - Soundflower". If I had the HK Soundsticks with the USB connection they would be listed as well.
Select the output that is appropriate to the speakers you have and check that the volume is set away from zero and that should be that.
If you have USB connected then check USB, if they are normal speakers with an iPod headphone type connector then check line out.
Make sure that any lights on the speakers are on and the volume know is set half way.
If there are no lights on the speakers (and I don't know of any that don't have at least one indicator light) then the problem lies with the speakers.
Report back and let us know what happens.

If there are a plug to connect them on your Mac i cant see why they shouldent work. Just connect them to the audio-out plug on your Mac


Good luck to you

mine will also occasionally disappear. i have had to do a restart of the pc which gets it back for my 160 gb firewire external.
the blinking light may be indicative of the hdd going bad, though.

The connector you have on the back of the video card is called and ADC connector, Dr. Bott used to make adatpers from ADC to DVI and ADC to VGA, but has since stopped making them, you should be able to those special adapters on ebay.

what kind of internet connection do u have? IF high speed, power cycle the system. unplug the modem and shut down the computer. wait 5 minutes then plug the modem back in. once all the lights r steady the turn on the computer.

Personally, I think your CPU is to far to come back. I'd trade it in.

There's also a connect button on the USB connector. Plug the connector in and press the connect button underneath until the light flashes. Release the button and click the connect button on the mouse until the USB light is steady.

This sounds like a spyware/virus problem. Try running the computer in safe mode(With networking) and see if it's any faster. You should also run your Anti-spyware,AV apps to check for problems.