M9750 Nightmare, Need Advice Please

My laptop had some dead keys so I bought a new replacement keyboard. I swapped it out, very straight forward. When I turned it back on, my screen was out. Let me add that there was nothing tugged on or interfered with associated with the lcd. Since I could see the image very very lightly when it was loading I assumed it was the inverter. I swapped out the inverter, no change. I tried a different lcd, no change.
When plugged into an external monitor, it boots up clearly, but when I get to the windows recovery window and select anything, you can see the windows logo much fainter, flashes a blue screen for a split second, and restarts the boot process. I'm guessing this may be a video card issue? It has dual cards.
Anyone have any advice for me at all, it would be greatly appreciated.
Thank you.

 

You could try quite a range of things from BIOS flash to re-seating the GPUs. Also, try booting with a single card and see if it changes anything.

 

Sorry, just noticed you changed your reply. That sounds like a good idea about the GPU, I'll try with the parent only. What bios flash would I use?
Thank you

 

An update on my situation in case anybody can suggest anything at all, desperation has set in.
My LCD is not getting a picture. I replaced the inverter, plugged in a spare laptop LCD I had, reseated video cards, tried just one card, swapped cards, switched RAM, replugged LCD cable on both ends. Works perfect on an external monitor. I haven't replaced the video cable yet, that's about it. I even reinstalled O.S. I never touched the bios.
If I can't figure something out soon, I'll have to ebay it, which sucks.
Any suggestions would be greatly appreciated.

 

Anybody?? Any ideas to throw out there?

 

When you said you replaced the inverter, do you mean a new one?

 

Yes, new. Well, actually it was a used tested pull, purchased off e-bay.

 

Well tbh it's perfectly simple if you tried the machine with just the parent card in and got no picture. The parent card is the secondary card and CANNOT drive the display. You need to try it with the Daughter card only! It's dodgy naming I know but that's alienware for you!

 

Well if you can see the image very lightly its not the video cards.. Its the back light.. Its not powering on. I had this happen to a desktop monitor.. The back light went out in it and If I held a flash light up to it i could see the image faintly but it wasnt illuminated.. Either the back light went out or a cable that powers it came un done/inverter dead.

 

Youre kidding me, yes that is dodgy naming at best. I'm trying to remember if I tried just the daughter card, probably just ever configuration except that.
Thank you very much for the info.

 

Unfortunately, I don't see the image faintly anymore, but I'll try with a flash light. I know that if you can see the image at all on the lcd, it isn't the cards, but I tried a different lcd, inverter, lcd cable. Since I couldn't see it anymore, I thought maybe the card or cards had an issue as well.
Thanks for your input, I'm going to check it with a flashlight.

 

Did you manage to fix your m9750.

 

Ok so just to be clear, you cannot swap the primary and secondary gpu's? They are fundamentally different and designed only for a specific slot? If I buy a gpu that was from someones primary slot i cannot use it as my secondary?

 

You cannot swap them no, the only way to do the swap is to flash a primary card BIOS onto the secondary card and vice versa.

 

Yook, contact me with pm or mail : jlescot @ hotmail.com for the parts on your laptop. (specifically the motherboard). Since your thread was deleted...

thanks

 

yook? you there?