I had exactly the same situation with a Gateway, and when I finally
gave up and took it in to the Gateway store they told me it was a
fried motherboard.
Mike

On 6/23/06, Todd Schroeder <[log in to unmask]> wrote:
> I have an HP Pavilion 8870 Desktop PC running Win. XP that I recently dec
> ided I would upgrade.  The video card shipped with it was a TNT2 Pro.  I
> had been told by HP Tech support that I could use "Any 4x card AGP with m
> ore video memory than 32 MB & which complies with AGP 2.0."
>
> With that info. I went to a local computer shop and was shown an array of
>  cards that I could use.  Always wanting the biggest and the best they so
> ld me on an MSI NX6600 VTD256.  I was hesitant because on the box it show
> ed Min. Requirements of AGP 8x compliant with a minimum 350W system power
>  supply.
>
> Now I don't know exactly what the power supply on my system is, but I'm g
> oing to assume its only around 185W.  I looked at quite a few web forums
> and did find one in particular where someone had similiar specs as myself
>  and it worked for them so that made me feel a little more confident.
>
> After installing the card, reconnecting all the cables, and booting, I wa
> s in dismay to see only "HP Invent" start-up screen and then nothing....i
> t just sits on "HP Invent".  There's power to all the drives, you can ope
> n and close them all, the keyboard light is on, but nothing else.  The co
> mputer doesn't show any errors or make any audio error alerts.
>
> I tried a few times just disconnecting the card, putting it back in, maki
> ng sure it was firmly in place.  (Blew out dust) Also I made sure any con
> nectors I took off were back on and firmly in place.  Still nothing.
>
> I immediately removed the NX6600 card and put my old AGP TNT2 Pro back in
> to the CPU.  Reconnected everything, checked to make sure no loose wires,
>  and booted.   "HP Invent" screen and nothing else.
>
> I have since rebooted countless times.  On about 2 or 3 of 12 boots I had
>  something occur.  Once Windows XP started to load but the bar froze a se
> cond later.  Another time it actually seemed to load the entire way but w
> hen it went to flip over to the desktop the screen just stayed black, fro
> ze.  One time it even gave me an error message saying that the comp. was
> improperly shut down, I wish I would have tried starting it in safe mode
> but I did not.  It counted down from 30, started normally and froze again
>  when it should have gone to the desktop.
>
> Is it possible that I fried something by putting that AGP 8x card in whic
> h required 350W?
>
> ANY IDEAS!? =(   I'm going crazy!
>
> I appreciate any and all replies.
>
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