Serious C90 Display Problem

So a friend gave me the first game in the recent Prince of Persia trilogy, but when playing it on my C90 it kept crashing to a black screen that would force me to reboot. After looking at possible causes I noticed my 8600M GT was idling at 80-83C, which compared to others seemed way too high, so I decided to take the cover off the C90 and double check the fans and GPU.

Here's the problem: Upon reassembling the machine I get no display. The screen backlight never comes on, and I can't really be sure if the machine is booting up or not (although the blue power light is on). Anyone have any suggestions on what I might have done? I only unplugged/replugged the GPU, and I've checked to make sure that's connected properly several times, so I can only think that I accidently disconnected something or... I don't even want to think about it... damaged the GPU. Any suggestions on what to do would be greatly appreciated.

 

ok

u can go to warranty don't try to do anything coz u will make it worse and u ur warranty might be void

 

I purchased it before ASUS began their new warranty offer, so I don't believe I'm covered by them. I'm not sure about the reseller I purchased from.

However, sending the laptop in for warranty repair is an absolute last resort option, as I go back to school next week, and a laptop is pretty much critical.

 

This has happened to me many times often when the machine crashes or sometimes just randomly when booting up. Soemtimes when you press power it wont come on until you turn it off (hold power button down) and turn it back on....sometimes you have to unplug it completly. ive had to remove the batter as part of the process too. just play around with it

 

Unplug & replug the video card.

I destroyed my first card with a screw and they changed it no problems.

 

One question for you. When you unplugged the GPU did you disturb any thermal paste during your inspection?

If you've got air in the contact points you can overheat and lock up a GPU in a matter of seconds.

Oh by the way that whole accidental warranty only applied to "retail style" laptops, not the barebones. Contact your seller for specific warranty info.

 

I never removed the heatsink directly on the GPU (which I glued to it with thermal paste) just the one on top of that connected to the fans.

JCMS, out of curiosity, which screw was it that you destroyed the GPU with? When I replaced the top-most heatsink I noticed one of the screws wouldn't lock into place right, it would stay put, but it was always a little loose.

I'm now 100% certain it's either the GPU or the LCD because after leaving the laptop running for a minute the Windows startup noise played meaning it's still booting fine.

 

I used a cover screw instead of a spring one for the heatsink, and the screw pierce the PCB.

And yes, registering (on the website) the C90S for the 1 year accidental worked, I needed to send to receip to Asus though but couldn't since I bought the day beore

 

BUMP.

Hi everyone, I recently encountered this same problem as the OP here. Rather than make a new thread I figured I would just reply to this.

After talking to Skyhawk he said his GPU was dead. My situation is a little different in terms of how I got to the problem. I did START > SHUTDOWN in Vista and then tried to turn it back on 5 minutes later. The HDD spins, the LEDs come on, the thing powers, the keyboard caps and numlock respond with the LEDs. I already e-mailed Ken from Gentech (where I bought it from), but before going thru any bigger hassles I was wondering if anyone had any ideas - or if it's possible to test a GPU.

I bought this thing September ... with one of the 256 DDR3s that get really hot. I've always kept this thing leveled and ventilated, but I'm afraid that the thing just finally got too hot. I run the 902 bios, have an E6700, usually OC via Turbo gear, and v174.93 Forceware without OC from LaptopVideo2go.com. I haven't been using the 1.75 series because all of them cause fatal errors in WoW.

Also, I found a boot problem thread here as well.
http://forum.notebookreview.com/showthread.php?t=179734
But it's not like that. The backlight of the screen doesn't turn on, and to turn the machine off I don't even have to hold the power button. Just one press of it will shut the machine back down. I've tried plugging and replugging multiple times with and without the battery.

-Phil

Also, if anyone feels like replying. If it does turn out to be the GPU and I need to get one. Anyone know a retailer? I just know http://www.btotech.com/_e/dept/08-007/ssproduct.asp?pf_id=40005801 and that's it at the moment.

 

Hi,

To determine GPU versus LCD, please plug an external monitor into your VGA port. If you see an image, it's the LCD, otherwise the GPU.

Retailers: please check the ASUS Info Booth.