and post lshw.txt in CODE tags.Code:sudo lshw -sanitize > lshw.txt
Instead of updating and upgrading, backup your personal data and make a fresh installation, because it is much easier. Try either of
https://help.ubuntu.com/community/Lubuntu-fake-PAE or One Button Installer
Ubuntu Wiki - PAE:
I'd suggest using Lubuntu 12.04 but I know someone here will strongly disagree with this suggestion so to save time, without going to deep technical discussion and endless argument, you may want to tell us what exactly are you going to use that machine for?
I have a P4 machine with less than 512MB RAM and 40GB IDE HDD, sitting 1.5m away from me, has two systems: Ubuntu 10.04 and Lubuntu 12.04 and I am not using this machine for daily tasks, I keep it just to play with it whenever I'm bored as I love Ubuntu 10.04 a lot. I do know that both versions are technically outdated but because I know what I am doing with that machine, I would worry less whether the version is supported or not.
Ubuntu 10.04 EOL:
Does 12.04 LXDE have LTS?
Lubuntu vs Ubuntu: