lubuntu 18.04-2 installation crashes

Lubuntu 18.04 will not install on my computer.
1. Gigabyte GA-VM900M motherboard
2. Intel 3 MHz P4 single core cpu
3. 2.5 GB of DDR2 ram
4. Nvidia Geforce FX5500 video board w/256 MB memory
5. 10 GB hard disc drive
This system worked well with Lubuntu 14.04 (upgraded on-line
to Lubuntu 14.04.6), although there were intermittent crashes
of Firefox on certain internet websites.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.12
ProcVersionSignature: Ubuntu 4.18.0-15.16~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-15-generic i686
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: i386
CasperVersion: 1.394
Date: Wed Jul 17 15:30:37 2019
InstallCmdLine: file=/cdrom/preseed/lubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd quiet splash ---
LiveMediaBuild: Lubuntu 18.04.2 LTS "Bionic Beaver" - Release i386 (20190210)
ProcEnviron:
 LANGUAGE=en_IL
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IL
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)