Windows Installer Error

Hi -

Hope I am posting in the correct forum. Please advise if I should post my request for help elsewhere. Within the past 10 days Tetonbob has helped me clean this machine so the following issue SHOULD not be virus related ... i think.

I have found many references to my particular issue on google. I had the best luck in the past though with this forum. I am not techie and you folks seem to communicate at a level I clearly understand. Hence my return to the tried and true.

The Machine:
Manufacturer: Sony Electronics, Inc.
Model: Vaio Computer (Laptop)
Rating: 3.1 W.E.I.
Processor: Intel(2) Pentium(R) Dual CPU T2310 @ 1.46GHz
RAM: 2GB
System Type: 32 bit

The problem:
When I reboot I get the following messages:
1.) "Windows Installer Preparing to Install"
2.) "The feature you are trying to use is on a CD-ROM or other blah, blah, blah"
3.) "An installation package PSSWCORE can not be found try using a valid copy of 'PSSWCORE.msi'"

Merely "X ing" through the error messages seems to circumvent the problem but I do not know if it may be interfering with the machine somehow ... other than that it only seems to be an inconvenience ... but what do I know?

From what I have derived on google this error seems to be tied to an HP All-in-One Printer. Well I indeed did at one time have one. So I have deleted the printer from the Printer folder ... but does this action also uninstall the printer drivers????

Thanks again for your help?