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Windows 7: repairing a laptop graphics card


04 Apr 2010   #1

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 
repairing a laptop graphics card

2 weeks ago i bought an XPS M1710 laptop off Ebay with a faulty gfx card quite cheaply with the intention of swapping out the card in my I9400 . The card is a GF 7900GTX with 512mb ram ,now the 7 series of laptop cards are notorious for failing due to heat , so after a little research on the matter it appearred there was a little trick you could perform to get these cards working
Well i thought i had got nothing to lose so why not give it ago, heres how

1: remove card from laptop
2: remove the heatsink and backing plate by undoing the retaining screws and gently prising apart
3: remove all traces of thermal paste from gfx and ram chips using 99% rubbing alcohol
4: Place in a pre heated (150 degrees C) oven , on a stiff piece of card for 3 mins only per side ( 6 mins total)
5: turn oven off and leave oven door half open (or half closed) for 30 mins
6: refit heatsink, backing plate and thermal paste, i used as5 and replace in laptop

7: the test , i used prime95 to stress the card + a few swear words thrown in to make it more stressed and it passed

So i was sceptical at first thinking what a stupid thing to do, but it works
The laptop has been running now for 78 hrs continuos with no probs, the temp is 43 degrees C using I8Kgui fan controller
so if anyone wants to try this method, i say give it ago you have nothing to lose


My System SpecsSystem Spec
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04 Apr 2010   #2

Windows 7 Pro
 
 

Remove the card? Do both laptops have an mxm? I'm curious about this. Most laptops tend to have the darn thing soldered in or part of the mobo. Also, why are you sticking it in an oven >_>
My System SpecsSystem Spec
04 Apr 2010   #3

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

Quote   Quote: Originally Posted by Heroxoot View Post
Remove the card? Do both laptops have an mxm? I'm curious about this. Most laptops tend to have the darn thing soldered in or part of the mobo. Also, why are you sticking it in an oven >_>
Dell have a custom designed interface for the gfx card that will fit ATI and NVIDIA cards ,the purpose of placing it in the oven is to "reflow" the poor quality solder used on the board which over a period of time causes microfractures of the solder track ,so heating it up to the temp allows the solder to reflow and fill the fractures ,how long it lasts before failure again is something i dont really know
My System SpecsSystem Spec
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04 Apr 2010   #4

Windows 7 Pro
 
 

ahhh the dell slot. I forgot about that. You said xps, but since I dislike dell that didnt register with me. I suggest testing with something like Fur mark instead. Prime95 is childs play lately.
My System SpecsSystem Spec
04 Apr 2010   #5

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

Quote   Quote: Originally Posted by Heroxoot View Post
ahhh the dell slot. I forgot about that. You said xps, but since I dislike dell that didnt register with me. I suggest testing with something like Fur mark instead. Prime95 is childs play lately.
yes it would be better to test with futuremark ,but i am not a gamer so the prime95 was adequate for my needs
My System SpecsSystem Spec
04 Apr 2010   #6

Win 7 Home Premium 64 Bit
 
 

im not entirely sure how you stress tested a video card with prime 95??? Its a math app for stressing CPU's

if you really want to stress it..................

rthdribl - Real-Time High Dynamic Range Image-Based Lighting -

http://www.famegadget.com/download-m...al-version.htm
My System SpecsSystem Spec
04 Apr 2010   #7

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

Quote   Quote: Originally Posted by archie123 View Post
im not entirely sure how you stress tested a video card with prime 95??? Its a math app for stressing CPU's

if you really want to stress it..................

rthdribl - Real-Time High Dynamic Range Image-Based Lighting -

Download MSI Kombustor 1.5 Final Version | FameGadget.Com | Hottest, Newest and Famous Information
thank you for the link archie123 , as i said im not a gamer so dont really know what benchmark software to test with ,so will use your link and retest
My System SpecsSystem Spec
05 Apr 2010   #8

Win 7 Home Premium 64 Bit
 
 

keep a close eye on your temps when running rthdribl (fullscreen) ou could fry an egg on it
My System SpecsSystem Spec
08 Jun 2010   #9

Windows 7
 
 

Quote   Quote: Originally Posted by pebbly View Post
4: Place in a pre heated (150 degrees C) oven , on a stiff piece of card for 3 mins only per side ( 6 mins total)
5: turn oven off and leave oven door half open (or half closed) for 30 mins
I am guessing your oven only has a heating element on the top/bottom? For mine which has elements both top and bottom and is fan assisted what sort of time do you think?
My System SpecsSystem Spec
08 Jun 2010   #10

Vista 64 Ultimate, Windows 7 64 Ultimate, Ubuntu 9.10
 
 

There are a couple of recipes for reviving a video card that is acting up and that is one of them, the other is:

1: remove heatsink and thermal paste
2: preheat oven to 385F to 400F( NO HIGHER!) ( gas mark 6)
3: lay foil over the oven rack
4: make 4 balls of foil, about 4cm high,
5: when the oven is heated to its correct temperature, put the graphics card on the 4 balls, one on each corner )
6: leave for around 6-10 mins, NO MORE THAN 12 OR IT WILL MELT
7: remove from oven and let cool on a stack of newspaper
8: once cooled, reapply thermal paste and heatsink then reinstall

This has been used by folks over on the Overclockers board and Alienware Forums with success with funky gpu cards. Of course it will only work for gpu's that have a connection, doing this to a mobo with integrated video might not work.
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 repairing a laptop graphics card




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