Vista DOES recognize hard drive in disk mgt but NOT in explorer
I recently installed vista ultimate 32bit on my hp d530 cmt.  All looked good at first.  I installed it on a new 250gb WD sata drive.  I also have a sata dvd-rw which is all good but took up my last sata port (only 2).  Now I put in a new IDE seagate drive 500gb. At first vista recognized it and then I plugged in an external drive and all hell broke loose.  The external drive wouldn't recognize and I tried google and tried a few things in the windows directory with infocache.1 and usbstor.sys and such but nothing worked.  Now my ide drive won't recognize either.  Oddly it IS in disk management but will not display in windows explorer. ok so now I tried removing the ide controllers from device manager and tried to let it auto reload them and that didn't work.  Vista cannot find the drivers for the controllers even if I point it to windows\system32\drivers. HP has no chipset drivers available for vista.  I tried the ones for xp and 
they won't install.  Please HELP!
 

did you initialize it and format it?

in disk mgt right click on the drive  where it shows not initialized and do so, then it will show as a drive elsewhere

 

oh yes i did this.  I had to do this for it to work originally.  I have tried
to do it again since and it appears to work but then i get an error at the
end saying that the disk mgt viewer is not up to date and to refresh.  The
drive will never show up up the top panel of disk mgt showing its drive
letter.  It does show up in the bottom panel though.

Translation:
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Vista DOES recognize hard drive in disk mgt but NOT in explorer. 
I recently installed vista ultimate 32bit on my hp d530 cmt. 
All looked good at first.  I installed it on a new 250gb WD sata drive.
I also have a sata dvd-rw which is all good but took up my last sata port (only 2). 
Now I put in a new IDE seagate drive 500gb. At first vista recognized it and then I plugged in an external drive and all hell broke loose. 
The external drive wouldn't recognize and I tried google and tried a few things in the windows directory with infocache.1 and usbstor.sys and such but nothing worked. 
Now my ide drive won't recognize either.  Oddly it IS in disk management but will not display in windows explorer.

ok so now I tried removing the ide controllers from device manager and tried to let it auto reload them and that didn't work. 
Vista cannot find the drivers for the controllers even if I point it to windows\system32\drivers.
HP has no chipset drivers available for vista.  I tried the ones for xp and they won't install. 
Please HELP!
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First:  did you run the Vista Upgrade Advisor prior to the upgrade?  If so, what did it have to say about system drivers?
Second:  That model # is either incorrect (typo?) and/or incomplete.  What's the full model name/number, as read from the HP service tag?  (Example:  my laptop is a Pavilion dv6105us.)