There are a couple more steps you can try to see if you can bring it back to life again. First, make sure the laptop is completely off, and remove the power and battery, then press and hold the power button for about 15-20 seconds, then plug just the ac power and try again. If it works, then great, all it needed was a bit of a power reset. If it doesn't work, then the next option is, again, remove power and battery, then remove all the RAM modules, and plug the power back in, and try turning it on. Hopefully what we should get is a POST error beep coming from the speakers. If it does give you that beep, then what it would most likely be is a faulty stick of RAM, in which case, you'll have to reinsert the RAM modules one by one (with the power off of course) and turn the unit back on to see if you can get video back. Basically isolate to see which stick is causing the problem, so you can get that one (or possibly, both) replaced. If you don't get the POST error beep even with the RAM modules removed, then it is most certainly a failed motherboard. If you're having troubles getting one for it though, you can either try contacting Sony technical support directly, or bring the unit to a local authorized repair center, and see if a technician can try their luck at locating a replacement board for you. Just be forewarned that laptop boards aren't exactly cheap (approx $200-400 USD), and if you have the technicians install them, labour charges will also accrue. Depending on the age of your machine though you could also check with either Sony, or your place of purchase to see if your repairs can be covered under warranty if you have one. Hope this gives you a little more information and points you in the right direction!
May 09, 2009 |
Sony VAIO VGN-FS740/W Notebook