My VAIO VGN-FZ340E laptop screen failed to keep regular 1280x800 resolution. It dropped down to 640x480 and shows various artifacts, vertical stripes and distortions. And this is the same even during booting or safe or other diagnostic mode. NVIDIA GeForce 8400M GT failed to work and despite update it is impossible to even see it in Control Panel. Various software tests failed to repair graphics. NVIDIA Driver Helper Service Vers. 167.60 stops working during regular boot (Module nvapi.dll). Unfortunately Sony VAIO hardware diagnostics (originally shipped with former Vista OS) failed to work even from recovery DVDs as most those utilities had been stripped down during Windows 7 installation. I have thatWin 7 Ultimate on for several months without significant issues, but during my last week European trip NVIDIA crashed a few times (but quickly auto recovered). I reseted BIOS to its default settings but nothing significant happened, RAM tests went without issues. Vertical stripes and various distortions persist including that low res during any possible states. Any ideas what might have happened and is there any solution available?
It is not a driver failure but it is a hardware failure. I have my own fz340e and have the same problem as yours. Now, my fz340e works fine.
Try to install all the video drivers from bottom to top..
http://esupport.sony.com/US/perl/swu-list.pl?mdl=VGNFZ340E
Dear Valued Sony VAIO customers,
Sony has identified a limited number of VGN-CS series computers which may display a horizontal line on the LCD screen.
Applicable Models
As part of our commitment to quality, for an additional 24 months beyond the standard limited warranty period, owners of an affected model displaying the symptom may be eligible to receive service for the LCD screen from Sony free of charge.
If you are currently experiencing this issue, please contact us at 1-888-476-6972 to arrange service.
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