Vaio cant run windows/screen lines

Sony Sony vaio laptops
August 23, 2010 at 08:40:47
Specs: Windows 7
I have a Sony Vaio laptop VGN-SZ55GN and up until recently everything was working fine. Then I started playing a game called Alien Swarm and after 2 in-game errors my computer started displaying vertical lines, 1 pixel-wide dashed lines of different color at Vaio startup, and pink-ish lines when in the Windows(kind of on the background).
It happened twice, for the 1st time the screen just blacked out, froze, and I had to restart the laptop manually. Computer worked fine since then until the second accident. Same in-game freezing. I restarted manually again. But this time there were these lines on the screen.
Not only does it affect the screen colors but also I can’t run my laptop on my Nvidia GeForce 8400M GS anymore. It doesn’t load the Windows. Stops right on the Windows loading emblem. But when I go into Safe mode or switch to the standard VGA graphics adapter, Windows works fine, but the pinkish lines still remain.

It happened on Vista. I installed a trial version of Windows 7, hoping it would solve the problem.

Seldomly lines disappear. Then I reinstall Nvidia drivers, reboot, and everything works good for about 10 min untill the screen blackes out and I have to power it down manually. And then it wont load Windows on Nvidia again.
I bought my laptop in Japan. Thank you.

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August 23, 2010 at 09:31:50
Try to use xternal monitor. If u see the lines (xternal monitor) in bios or post screen then it's a hardware issue (display adapter).

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August 26, 2010 at 06:49:15
I couldn't make the external monitor to work. To make monitor work i'd need my nvidia drivers installed, but the problem is I can't run computer on Nvidia, as I mentioned before, so there is no way to do the xternal monitor check. Is there any other ways to verify?
Or am I wrong about monitor situation?

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August 26, 2010 at 12:20:04
If you get the oddball video symptoms BEFORE Windows loads while booting, that can't be caused by any software problem on the hard drive - that's caused by a problem with the computer's hardware.

Usually the only thing you can do with a laptop or netbook regarding a possible hardware problem is to try this:
See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:

For a laptop, or netbook, you must remove both its main battery and AC adapter before you do that.

For a brand name computer, see the Owner's or User's manual if you need to - how to remove or replace the ram is usually in that - it may already be in your installed programs. If you can't get into Windows, it may be on a disk that came with the computer, or you can go online and look at it or download it - it's in the downloads for your specific model.

Almost all laptops and netbooks have a video adapter that's built into the mboard and can't be removed. You can't fix that if it's malfunctioning, but there's usually nothing wrong with that.

It's common for the built in display to have video problems after the laptop or netbook has been used a lot, or at any time after the laptop or netbook has been dropped, or has had liquid spilled on it, but in that case, an external monitor usually still works fine.

The video adapter and the mboard do not need any video drivers from the hard drive before Windows has loaded - the ability to display plain VGA video is built into both.

Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.

See response 1:

DO NOT plug in or unplug a monitor's video cable into / from a video port while the computer is running. Doing so can damage the monitor's circuits and/or the video adapter's circuits.

Some laptops will display on an external monitor without you having to do anything.

If you get no video on an external monitor, some laptops have a key combo that you must press to toggle the display to external video only / sometimes both / built in display video only - see the Owner's or User's manual for the model.

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