DV2890ca problem

hey all,
i bought this laptop may 2008 with nvidia 8400 card in it from futureshop,
but lately the screen was acting crazy, could someone identify the problem for me, see if it is the video card problem. here is a shot of my screen



any input will be appreciated

 

Looks as a Graphic's card issue, try hooking it up to an external monitor if you get the same it probably is, if not might be the inverter,

 

Inverters just power the backlight, which appears to be working fine. Most likely the defective NVIDIA GPU is beginning to fail.
http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=en&cc=us&docname=c01087277
But definitely test with an external monitor to verify that.
The good news is that you're well within your standard 1 year warranty so there's no need to deal with the enhanced warranty that tends to exclude Intel notebooks for no particular reason.

Alternatively, if the display works fine until Windows boots I'd suspect that something messed up your Windows display settings. Booting in Safe Mode (hit F8 during startup, select Safe Mode) will let you get into Windows and tweak that.

 

well, the issue can be as brian mentioned the graphics card failing, but it can also be just a brocken or loose monitor cable.

had something very similar and in my case it seemed to be the monitorcable (or the jack) . when i pushed the screen housing a little bit the picture sometimes became stable, or worse.

i contacted hp about this issue via their webportal and they simply exchanged the whole display.
since your laptop is under warranty ( i guess ), you should contact hp and get a repair process started.

be sure to make some pictures of your laptop before you send it in. you never know what can happen at the repair center.

i made photos of the housing aswell as the motherboard, to ensure there was never liquid in the notebook before it left to the repair center.

btw , here is how i experienced the repair process in every detail :

http://forum.notebookreview.com/showthread.php?t=289108

 

thanks for the info. i really appreciated
i already phoned hp for the repair box, i think it will be here soon
btw, it's snowing as well sometimes, just like old tv
so im guessing it caused by nvidia card

 

I have the exact same model dv2890ca, and had the exact same problem. Unfortunately, my warranty had expired in August 20, 2009 and it's not covered by the product enhancement warranty. Luckily, here in Quebec, we're covered by a legal warranty from the "Consumer protection act"

"Goods must be durable.

38. Goods forming the object of a contract must be durable in normal use for a reasonable length time, having regard to their price, the terms of the contract and the conditions of their use."

Long story short, the case manager accept to repair at no cost. The repair was done promptly 2-3 days. However, the new 8400m GS can run up to 96C! I'm not sure if that's considered dangerous. But this time the repair is guaranteed by HP for 90 days.

I wished they had replaced with a non defective one.... I guess I'll need to talk to the case manager.

 

96C means that it's going to break again, eventually. Taking the notebook apart and replacing the GPU thermal pad with a thin copper shim should significantly reduce the failure risk, at the cost of voiding your new warranty. It's also a good way to break something. These notebooks really weren't designed with maintenance in mind, HP's decent service guides notwithstanding.

 

Wow. That's exactly how the screen on my DV2500t looked like - the screen splitting into 8 parts and lines running across and down. I had to replace a motherboard and do a copper mod for the nVidia GPU.

Check this out. Taken from here:
http://forum.gsmhosting.com/vbb/showthread.php?t=746159

 

dead GPU for sure...