A lot more information is needed before anyone can help.
We don't even know what platform you're on, Mac or Windows, let alone what your system specs are.
Please read this FAQ for advice on how to ask your questions correctly for quicker and better answers:
P.S. Incidentally, at least on the Mac, CS did not come with an uninstaller. You can simply drag it to the trash and empty the trash.
After re-reading your OP, it seems to me you're on Windows, so you can disregard the last paragraph in my previous post.
Originally installed adobe photoshop cs. This couldn't be activated and support was contact they advised to uninstall and install adobe photoshop cs2 with a serial number provided that was provided with the link. Thanks
You mention a link. Did you download the special CS2 installation file, and not use an original CS2 file?
Your system originally had CS on it? CS is ten years old. How old is the computer you are using?
How does this system stack up with the minimum requirements for CS2?
Remember these are _minimum_ requirements, which in reality means not even close!
If you think your system should be up to it, do what Station said, and give us a very full description of your system and operating system. (Unless it is Windows XP. )
Our platform is windows xp sp3.
The PC is 5 years old. It does meet the system requirements for CS2. Processor specs are met, 2gb ram, 500gb hdd space, monitor resolution is met, has a cd rom and internet connection
Yes the special CS2 file was installed not the original.
We had a license for CS which was running previously we’ve since replaced the original pc (also win xp) with a ‘newer’ one.
Please advise if any further info is needed
Please note that the error means what it says: some serious error from the OS or hardware has occured, and Photoshop cannot continue working because of that error.
You have something very wrong with your system, most likely with the hard drive. Sometimes we've seen corrupt OS files and malware cause errors like this as well. But make sure you have a backup, and check your system for disk problems (and malware) as soon as possible.
Along the lines of Chris' comments, I would open Windows' Event Viewer. In both the System and Applications Tabs, look at the events, around the time of that error message with Ps CS2 (special). You should see errors, or warnings, at about that time. Open each one, and for any with a link, follow that link. Some will likely be just a bunch of code. Not much can be done with those, as even most MS engineers cannot read them, BUT for all with links, make note of where those links lead, and the messages contained there. The linked pages might also have links - follow all, keeping notes. Do this in both the System and the Applications Tabs. Clues to what is happening, will likely (hopefully) be contained within. This might take some time, but be patient, and click on all.