When I turn the computer on, the light on the front of the unit is solid amber and the fan is running like crazy. I have tried the fixes such as the unplugging of power supplies and cards, listed on Dell to no avail. Does anyone have any other suggestions? The unit is only 2 years old. I'm thinking it is the mobo but wanted to check with some of the experts before incurring the expense. Thanks.
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If the power light is steady amber - The computer is receiving electrical power, but an internal power problem might exist. Ensure that the microprocessor power cable is securely connected to the system board. it might also be a failed mainboard already since you are experiencing a blackout.
I had the same problem with my unit. Amber light was on and humming sound comming from speakers. Motherboard had to be repaired by ICEBOX dealer that sold me my unit. In your case, power supply could also be bad. Their website is www.lordantech.com
To el_cid_132: Did you mean to say a solid amber light on the MONITOR's power button? If, after all you've tried with the computer, you still have no display, it's a pretty good bet your monitor is bad. Try another monitor to verify the computer function. Take a close look at the pins in the monitor's input cable plug. They are pretty easy to bend, and you may have one not making contact.
To Jaffe: It's a simple job to remove the hard drive from your laptop and hook up to another computer to copy anythig off that you want to keep. I don't know what a shop in your area would charge, but it should be reasonable. As for replacing the system board, a quick Google search for "MX6448 motherboard" turned up several sources, price range $250-$300. Usually it's not worth putting a new system board into a laptop unless it's a very high-end model. You can buy basic laptops now for around $400, and you'd be getting brand-new with a warranty.