Question about Power Color RADEON 9550 R96-LC3 (128 MB) Graphic Card
System - Shuttle SK41G Skt A KM266 with XP-2400+ Processor
8 – 32MB Onboard Graphics
512MB DDR266 PC2100 RAM
120GB 7200rpm Hard Disk Drive
1.44MB Floppy Drive
Problem - Have changed BIOS to AGP 1st and 256mb. Have unistalled S3 display driver. Have removed old PCI 56k modem. Have checked 200w PSU (No problems). Have readied ATI Catalyst with necessary drivers. Have put in new AGP Graphics card. Booted system, fans turn, lights glow, all very positive. Negatively the mouse has no power through PS2, nor the Keyboard. Windows XP does not load. Nothing at all on the screen.
Any ideas? What have I done wrong this time?
Much appreciated, Jon.
Depends on the video card ,it might require more power ,200w is fine for onboard but add other components and the system needs more power.
Disconnect the harddrive or CD ROM drive and see if the system will start.
If it starts then you will need more power 300-400w at least but shuttle power supplies can be expensive to get.
Posted on May 18, 2009
AGP cards and AGP slots have two horizontal layers of contacts that are staggered vertically. ATX family computers always have DC power in some places on the mboard, including some of the contacts in the AGP slot, even when the computer is NOT running, as long as the power supply is receiving live AC power.
If you don't REMOVE the AC power to the computer when plugging in or unplugging the AGP card, you will probably DAMAGE the card's circuits or the slots circuits or both, due to the contacts being staggered.
Assuming that he REMOVED the AC power to his case when he plugged in or unplugged the 9550 card at ALL times to prevent DAMAGIING it and/or the AGP slot circuits.....
The most likely cause of jon55mcc's problem was the 200 watt capacity of his particular power supply was not enough to support both the rest of the system's and the 9550 card's power requirements.
It would probably work fine with a PS that has at least a 250 watt capacity, maybe ~ 230 watt.
I have a Radeon 9200 card that works fine with a system that has a 250 watt PS, but it won't work, the system won't boot, with a 200 watt power supply. The 9550 probably requires about the same amount of power or a bit more.
You can usually buy a replacement proprietary (oddball sized) PS on the web for a Shuttle XPC Barebones system from other than Shuttle that will fit in the case that has more capacity. Search using the Shuttle part number or the PS manufacurer's part number that's on the label on the PS.
I've examined the propreitary (oddball sized) PS used in a friend's Shuttle XPC system, I investigated getting a replacement for it that has more capacity on the web, and I've replaced one of a similar size in a HP small form factor system that died with one that had more capacity. They're in a relatively tiny metal enclosure, have a tiny fan, and there's not much room inside the box for air to get in and out of it. They're more likely to malfunction than regular sized PSs with their relatively large fan, and even if the PS was originally capable of supplying the rated wattage capacity, it's more likely than for a reguilar sized power supply that they can no longer actually do that as time goes by.
If you replace the power supply make sure there's as little as possible in the way of it's opeinings.
" Have changed BIOS to AGP 1st and 256mb."
When your mboard has onboard video ( a video adapter built into the mboard) and also has an AGP slot, when you install a card in the AGP slot and if it's recognized properly, the bios automatically DISABLES the onboard video, and any settings in the bios regarding how much ram installed in the mboard is shared with the onboard video are ignored.
The settings in the bios for Primary video or Intialize video first or similar - e.g. PCI, AGP, Onboard - CANNOT disable any of those video modes while the computer is booting BEFORE the operating system loads, and if you have Win 2000 or higher installed, Windows will have basic VGA video when the specific drivers have not been loaded in Windows yet.
However, if you have an AGP card, that setting should be set to AGP, because if that's set to something else Windows will not be able to properly use the enhanced settings and features that the specfic video drivers for the video chipset provide for the AGP card - it will still work, but not as well as it was designed to work.
(In ME and below, you may get no video at all in Windoiws if Primary video or Intialize video first or similar is set to the wriong mode in the bios. )
Ads for video cards often mention only the max AGP mode the video chipset supports, or not all the modes it supports. The video chipset usually supports other AGP modes as well.
All AGP video chipsets that support 8X AGP specs also support 4X AGP specs.
If the mboard's main chipset doesn't support 8X AGP specs but it does support 4X AGP specs, the 9550 should work fine, automatically, in 4X mode
See the info here:
18872 ATI AGP Graphics Cards - AGP Compliance Details
You'll see there that...
Radeon 9550 supports only 4X / 8X AGP modes
Some Radeon video chipsets, e.g. many 9500 and below, etc., support 2X mode as well as 4X or 8X mode.
Some mboard main chipsets that support 4X or 4X / 8X AGP modes ONLY can be DAMAGED by installing a card that has a video chipset that supports 2X / 4X or 2X / 4X / 8X modes, there's often a WARNING in the manual for mboard about that in that case, but that can't apply in this case.
With very few exceptions, if the video chipset supports 2X mode as well as 4X or 8X mode, the contacts for 2X mode are wired up to the video chipset on the card. If the card you're using is an exception, that will be probably be mentioned in the manual for the video card.
Posted on Apr 25, 2012
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Posted on Jan 02, 2017
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