By the sounds of it you have a corrupt installation of windows, either that or a bad partition.
I would suggest backing up any important data from the drive, if you can, if you have but have no means of backing it up to then just ask and ill tell u how to do it via msdos.
Format your hard drive and do a clean installation of Win98 or Win2000, your pc could quite easily handle XP, although it would struggle with just 128MB of memory.
Once formatted reinstall your chosen operating system and download / install all the latest drivers / chipsets for your audio, graphics, network & chipset for your motherboard.
Also make sure the computer is upto date with the latest microsoft patches and service packs:
Windows Update Site
Also make sure that your Microsoft Office is upto date if or once installed:
Office Update Site
Also, if the machine is connected directly to the internet or is going to be make sure you have a firewall installed, i recommend Sygate Personal Firewall (now at version 5.6), and make sure it has a good anti-virus, i recommend Grisoft AVG
use
www.google.co.uk to search for these, make sure the Anti-Virus is set to update automatically at a scheduled time that your sure it will be on, or everytime it is run to check for updates..
Also for browsing use: Mozilla FireFox instead of Internet Explorer, this will help provide protection against Spyware and malicious attacks against IE.
And download: Spyware Search & Destroy and Spyware Blaster, again make sure they are upto date.
On the firewall basis, make sure that your computer that is connected directly to the internet or controls the internet has a firewall on, as suggested: Sygate Personal Firewall.
Hope this helps, if you need more detailed instructions, just ask :good:
If none of this helps, post what you have tried and done and whats happening, or if there is anything different.
- PX