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Replacing 7500LE with 8600GT


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10 replies to this topic

#1 rowal5555

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Posted 29 October 2008 - 02:02 AM

Do any of you guys see a problem with this?

I tried it last week and promptly blew my power supply. Replaced that with a 400watt but  my PC still would not run. Put the old card back in and RMA'd the new one as faulty but the suppliers advise that it works OK for them. Is there anything else I should know before trying again?

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#2 garmanma

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Posted 29 October 2008 - 11:29 AM

What power supply did you replace it with?
You should be OK with the wattage. you need 18A on the 12V rail
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#3 rowal5555

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Posted 29 October 2008 - 03:59 PM

Hi Mark

I don't know the specifics, but it was done (for free!!!) by a tech firm who specialise in building systems so assume it will do the job. When I installed the new card, I hadn't installed the new drivers - would that stop my machine from starting up??

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#4 Sterling14

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Posted 29 October 2008 - 05:03 PM

It is always recommended to uninstall the old card's drivers before taking it out and putting a new one in, but it is also recommended to install the new drivers after you install the new card. I think the system would still boot though, because I'm pretty sure it doesn't even use the driver's until the computer boots up your OS. Either way, the system still should have at least made it to POST.
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#5 figgis41

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Posted 30 October 2008 - 04:54 PM

hi,,, boot from disc and run a diognostic on the hdd and the ram for errors,,,, here is the one i use,,, download and copy to a disc,,, run a couple of passes on both hdd and ram,,, if it comes up with errors then that piece of hardware is kaput,,,
http://support.packardbell.com/uk/item/ind...;ppn=P660400401
good luck.
Figgis,,,, LUFC

#6 rowal5555

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Posted 10 November 2008 - 02:31 AM

Update

The suppliers ran the 8600 for a week and advised they had no problem, so it arrived back here today. This time I uninstalled the drivers and rebooted as recommended. Powered off and replaced the card. Same result as last time - power light comes on and goes straight off after a couple of seconds.
I have found nothing to suggest that this is an incompatible upgrade, and the techies never commented.
There is only 14A on the 12v rail but they reckoned this one would do the job OK, and that no extra power connections were required. I am totally at a loss as to why it won't boot up.
Any more suggestions??

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#7 Sterling14

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Posted 10 November 2008 - 08:51 PM

I can't really think of anything else except the power supply. Only 14amps seems a little low (even though I would of tried it too :thumbsup: ). I would do as garmanma suggested and get one with at least 18a.
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#8 rowal5555

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Posted 10 November 2008 - 11:24 PM

The card I am trying to run is an INNO_3D GeForce 8600GT with 1GB DDR2 memory. It has been suggested that maybe the BIOS is not recognising the extra memory. BIOS was updated to 3.24 recently from the HP site. (What is Video BIOS? Haven't come across that one before.)

I have just put this to HP but it may be outside their help reference. Guess we will wait and see.

Thanks for your replies.

Cheers.

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#9 rowal5555

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Posted 12 November 2008 - 11:47 PM

Update

Went along to techies this morning with a couple of scenarios to try, both of which would cost me about the same.

1. Replace PSU with a beefier one and try my INNO_3D 8600GT with 1GB DDR2.
2. Try a different 8600GT with the existing PSU.

I went for option 2 and put in an ASUS EN8600GT MAGIC with 512 DDR2 which worked fine so I quit at that as it was costing me time.

To figgis 41. I couldn't run the diagnostics with the new card in as the PC wouldn't boot, but did run the inbuilt PC Doctor 5 ones (after burning the ISO to Boot CD) with the old card in and all was satisfactory. Thanks.

So I now have a spare 8600 that the suppliers reckon works fine in the right unit - anyone in the market for an upgrade? LOL

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#10 rowal5555

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Posted 14 November 2008 - 03:19 AM

Loaded up the card last night and it was stuttering all over the place, so back to the techies this morning to tell them what I thought of them and their advice, and to get a Corsair 450W with 32A on the 12V rail. :thumbsup: Thanks Mark, Sterling14, and DSTM.

FWIW. From what I have been able to ascertain, my problem (apart from inadequate power) seems to be related to the amount of memory on the video card and the age of my mobo - which is just on 2 years. It seems that 256MB was the standard back then and the manufacturers allowed for upgrades to 512MB but not to 1GB and the BIOS simply won't work with 1GB. Did manage to get the 1GB working but with all sorts of errors which the techies tried to blame on a faulty mobo, but when I got home I put the ASUS 512MB back in and all looks good now.
Learn summat new every day, Eh?

Edited by rowal5555, 14 November 2008 - 04:04 AM.

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#11 Sterling14

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Posted 14 November 2008 - 08:55 PM

Well, I hope everything works out for you! I was not aware of this memory problem, but it does make sense!
"I think there is a world market for maybe five computers." - Thomas Watson, Chairman of IBM, 1943




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