Error 1603. Photoshop CS4

Question

Alright, so I recently got Photoshop CS4, for some odd reason when I had to do a system restore, it messed up. Not sure why, but I got the screen to accept or decline the user end license agreement, when I clicked to accept it, it just went away and nothing happened. So I uninstalled it, and tried reinstalling it, now every time I try, it gets right to the end, where it's installing Adobe Bridge CS4 and it comes up with an error saying it had problems installing photoshop CS4 and then asks me if I want to continue with the installation, I click continue, and it finishes, but I get an error message at the end again. When I click more information I get this:
Adobe Photoshop CS4
Error:
Error 1603. Fatal error during installation.
Adobe Photoshop CS4
Error:
Error 1603. Fatal error during installation.
Adobe Bridge CS4
Error:
Error 1603. Fatal error during installation.
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Adobe Device Central CS4
Error:
Error 1603. Fatal error during installation.
I'm not sure why I'm getting this error, please tell me someone knows what the hell is going on here? Lol. Because people are going to ask here are my specs:
Model: HP Pavilion dv6700 Notebook PC
OS: Windows Vista
RAM: 2g
Free HD space: 170g
Complete HD space: 250g
Processor: AMD Turion(tm) 64 X2 Mobile Technology TL-60 (2 CPUs), ~2.0GHz
BIOS: PhoenixBIOS 4.0 Release 6.1 (you probably won't need this, lol)
Graphics: NVIDIA GeForce 7150M / nForce 630M
All help is EXTREMELY appreciated. :D Thanks in advance.

Answer 1

I just got the trial version to install after trying for 12 hrs.
I'm on Vista Home basic, acer laptop, I tried everything ..
I edited the registry (see this post
Alan Musgrove, "critical error during PS CS4 installation" #20, 22 Jan 2009 12:56 pm and deleated the keys back to default), turned off firewall and anti virus, disconnected from the internet, shut down all my running programs including the acer empowering technology application( using windows taks manager) ran adobe wincleancs4 script twice, then cs3 clean script, made sure the adobe cs4 trial file that I downloaded was on my desk top, then turned off the uac (user account control).
Whilst running the clean up scripts to level 2 (maximum) I also chose the option to remove the adobe media player . One of the clean up scripts gives the option to do this, can't remember which one.
I already have shockwave player and reader 9.1 installed, but I chose to install all the items on the trial. It worked like a dream.
I tried every fix you could imagine before, but IMHO it was probably running Both clean scripts to (level 2 with the remove media player option) as explained and finally turning off the UAC that did the trick.
Maybe if I'd turned off the uac first. I may not have had to do the others.
all in all, by doing everything above, it finally worked.
Hope that helps someone.
Thanks all.