Specs are reported but the partition information is missing, yes it could still be hardrive failure but not total, which means you may be able to recover your files with a recovery program. I would suggest getting a new hardrive and loading your operating system on the new drive, then using a drive recovery program to get the files from the old drive. Did you remove and replace the RAM modules, sometimes on older machines the RAM modules develope some slight corrosion which can be alleviated by removing and reinstalling the modules. This is to eliminate the fact of RAM being the problem, by also running a testing program on the RAM itself from DOS. You can get Memtest from the Utilities section at <A HREF="http://www.bootdisk.com" target="_new">http://www.bootdisk.com</A> and the file recovery from<A HREF="http://www.pcinspector.de/file_recovery/UK/welcome.htm" target="_new">http://www.pcinspector.de/file_recovery/UK/welcome.htm&...;/A>both programs are free to use.
I truly do not think theres anything wrong with your RAM, testing it is just to eliminate it as a possibility.
Details, Details, Its all in the Details, If you need help, Don't leave out the Details.