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View Full Version : Asus g74sx Blank/Black screen after Boot.(cant see logon screen,desktop.etc)



frozster
06-29-2013, 01:34 AM
Hi guys, so for the pass few days Ive been searching the forums and the web for a solution but failed so i figure its time to put it out there. Here's the scenario, upon booting up my g74sx, i am able to see everything up until after the windows 7 logo loading screen, then everything just goes blank. I cant see the logon screen, but i am able to login to the desktop. (could be heard) but the screen remains blank/black.

Funny thing is, i am currently typing on it right now ! using an external monitor through hdmi. I'll list down what ive tried and then my specs. hopefully some of you can give me a new lead before i decide to format my laptop.

symptoms:
-Black screen from windows logon screen onwards.
- Occasionally i can see lines on the screen/working properly for a brief moment when i watch a video through hdmi.
- It stated happen a week ago, after i gave it a cleaning session (blow out dust using datamax metro), not sure if this was the cause.

What i tried:
- Remove Nvidia driver (etc), and reinstall latest version (310 something) / the one that came with the laptop (268 something). Didn't work, still black screen. One thing to mention would be that , while running with the onboard graphic (without nvidia driver installed), the screen would work fine. i can see everything but resolution limited to 1280 x 1024).
- I have rollback rx installed, so i rolled back a few times, tot he previous known working snapshot as well as to the earliest snapshot ( after format and clean install of drivers) but it still didn't work.
- Tried to ' load default settings' for bios, and boot. but no luck.
- Booted into safe mode, working fine at low res onboard graphic.
- Tried lowest resolution setting 800x 600 didn't work.
- fn + f7, backlight is working but no image on screen.
- Booted into Ubuntu live disc, and it works like normal. i can use the full 1920 x 1080 resolution fine.:)

Spec:
Asus g74sx
Windows 7 ultimate.
Intel i7 2630qm
12gb Ram
1 x crucial 128gb ssd (c drive)
1 x 750gb hdd (d ,e drive)
nvidia 560m


Let me know if there's anything else that i could include. Many thanks.

Pitcher@asus
07-01-2013, 01:49 AM
could you try reinstall OS or press F9 to restore OS?

larenshi
09-26-2013, 02:42 AM
I'm having the same issue. Any resolution?

tanel_k
09-27-2013, 07:10 PM
had the same problem..... dont remember if my problem went away after updateing my video drivers...

larenshi
09-29-2013, 01:43 AM
I did try to update to the latest graphic drivers, still didn't work. Gonna try to uninstall the drivers, use driver sweep to delete all old drivers, and reinstall.

larenshi
10-02-2013, 03:54 AM
I uninstalled the driver, did a driver sweep, still does not work. One thing I notice is that when I first turn it on and it's supposed to load up with the initial boot screen, the screen looks fuzzy/broken lines. When it first loads and I press F8 to try and boot into safe mode, I'll see the letters for a brief second and the screen will shut off/turn black on the laptop.

However, if I connect to an external monitor, EVERYTHING works fine.

BIOS is up to date. Downloaded latest graphics driver.

This is all started when I left the laptop in the car and it was a HOT day. Possible MB damage?

larenshi
10-06-2013, 01:01 PM
We took apart the screen and it was a loose connection in the back. Maybe the heat caused the tape to wear off and the cable got loose from the screen, but now everything works.