PDA

View Full Version : G73Jh random black screens (sound works), hardware related? [solved for now]



ColourfulDucttape
07-07-2013, 10:52 PM
Hello!

This is the first issue I've ever had with this laptop since I bought it, summer 2010, no RMAs whatsoever.

The past few days I've been experiencing random black screens on my 3 year old G73Jh. These happen at random but most of the time when I'm playing videogames (not a lot of things running in the background, either). The screen just goes black (as if using Fn + F7 to turn the display off) and the sound works, I just have nothing being displayed. Sometimes it stays for 20-30 seconds and then the screen goes back to normal, but most of the time I'm forced to reboot my system.

I've tried reinstalling drivers and whatnot but it seems to not be software/driver related, as it pops up when rebooting, too (before the login screen).

I've also done a complete disassembly of my laptop to see whether anything was wrong on the inside, but I could not notice anything out of the ordinary other than a display cable being stuck underneath the rotating hinge but this did not solve anything either.

Any ideas?

Much love,


Valerie

Pitcher@asus
07-08-2013, 09:56 AM
try connect to other monitor and try again, also install new driver.

ColourfulDucttape
07-08-2013, 01:01 PM
try connect to other monitor and try again, also install new driver.

Installing different drivers, both old and the newest, didn't affect it in any way, still gives the same problem. Tried hooking up a second monitor and this displayed it just fine (extended display, that is). Oddly enough, it happens when I tab out from a videogame. Any other ideas?

ColourfulDucttape
07-16-2013, 02:36 PM
Bumpity, still having issues after a week. :/

ColourfulDucttape
07-19-2013, 11:39 AM
Update; as of late it starts flickering, turning the screen off and back on, sometimes leaving it black after a while, sometimes the display keeps working.

Any ideas?

ColourfulDucttape
07-19-2013, 02:53 PM
http://www.youtube.com/watch?v=fXyZwN8wCgE

A short video of what happens, this is a while after it has booted up. On the right you can see an external monitor, so it obviously is not gpu/mobo related (I guess?). Gray lines happen from time to time too, followed by the black flickering and then the display is 'off'.

The buzz you hear is my phone, not the laptop, in case you were wondering.

Update 2; from time to time it displays this, which seems to show what has to be shown, in screwed up state however (compare the lines to the Chrome window on the right);

23576
23577
23578

cl-Albert
07-19-2013, 09:25 PM
Thanks for the video, pictures, and details.
Unfortunately, I don't know exactly what is wrong, but would suspect a hardware problem with either the LCD itself or the LCD cable if you didn't already come to this conclusion.

If the problem show up often, tap 'F2' when you power on the system to get into the bios to confirm you still see the display problem and eliminate any software related issues although I've already concluded it's a hardware issue.

I would guess it more likely to be an LCD cable issue if the problem comes and goes although the flickering issue may be related to your LCD panel itself.

1. If you can run the system safely while the screen is disassembled, you might try wiggling the LCD cable or pressing on the connections to see if this fixes or causes problems, etc. to try to isolate the problem to the LCD cable. Since you mentioned finding the display cable stuck under the rotating hinge, it's possible it may have been damaged if this isn't where it normally should be.

Otherwise, try moving the screen in different positions to see if it works in some positions and not others.
Lightly press on the back of the screen to see if it makes any difference, but I'm not sure that it will.

2. Not sure if you want to send it to ASUS for out-of-warranty service, but if you don't have a better way to reach them, check this contact page (http://support.asus.com/Hotlines.aspx?SLanguage=en).
Make sure they try to replace just the LCD cable first to solve the problem if you aren't as worried about the flickering issue which may require a more expensive LCD panel replacement.

3. If there doesn't seem to be an easy way to solve this and you can make your notebook a desktop, turn off your notebook screen and just use an external monitor if necessary.

Well, hope this helps and others can still provide better suggestions.

Good luck!

ColourfulDucttape
07-20-2013, 11:24 AM
Thanks for the response!

I've tried running the system, completely disassembled, to see whether wiggling the lvds cable would work, but it did not affect it in any way. I doubt it'd be a software issue either, considering everything runs just fine on the external monitor, as seen in the photos.

Now the weird thing is, yesterday I have had - no - issues whatsoever after 5 minutes of being messed up; I could play games, do whatever I felt like, the laptop's LCD screen was working.

On the topic of sending it to ASUS, it's probably easier, faster and less expensive to order a lvds cable itself, try that out and if that doesn't solve it, it should be the LCD itself which needs replacement. However, if it's neither of the two then it'll still need to be sent out. (:

ColourfulDucttape
07-21-2013, 08:11 PM
Another update, after some more troubleshooting, it seems the display flickering and ultimately going blank/black happens (most of the time) when I actually play higher-end games (fullscreen, maxed out). Last week I had no issues whatsoever but I did not play any games during this 4-5 day period, as soon as I started one up however, the display acted up again.

After seeing several others with this issue (same laptop, same gpu (Radeon 5870s), see link below), would it not be a possibility that this might actually be GPU related?

Other people with this issue; http://rog.asus.com/forum/showthread.php?27289-G73JH-Black-screen-during-games

cl-Albert
07-22-2013, 07:23 PM
Yeah, but the unusual thing in your case is that we would expect both the external and notebook screen to have problems if there was a GPU issue although maybe you have an uncommon GPU problem we haven't run across.
Not sure if you are using/checking the external monitor while gaming, but I would think the other users in your previous thread saw problems on their external monitor at the same time.

Anyway, unless you have a spare GPU to try, there probably isn't too much you can do if it really is a bad GPU although you might also want to check temperatures, clean the fans, and re-do the thermal paste if you can do this safely.

Don't know if this will mean anything, but if you go into the bios using 'F2', try using Fn+F7 to toggle on and off the notebook screen to see if it's causing any problems.

pish180
07-23-2013, 04:16 AM
If you have not re-pasted the CPU and GPU I strongly suggest it! I was having all kinds of odd problems but no thermal alarms. I re-pasted and updated the vBIOS and everything seems solid now. I've rand stress tests and benchmarks, no problems.

I also had a stick of RAM go bad since i've owned the laptop (found this by random crashes and confirmed by running memtest). I've sense upgraded to 16GB. If you haven't done so, update the vBIOS and update the video drivers afterwards.

ColourfulDucttape
07-27-2013, 03:14 PM
Heh, update, decided to repaste both CPU and GPU, everything seems to be working fine now since 3-4 days ago.

Thanks for the help. (: