Acer Aspire 5720 not booting successfully. The system hangs while booting on:

Starting udevd: /sbin/udevd --daemon
Triggering udev events: /sbin/udevtrigger
Specs:

Intel Core 2 Duo T7100 (1.80GHz)
Chipset Intel 965GM
2GB DDR2 Ram
S-ATA Hard Disk Drive
ATI Mobility Radeon HD X2300