I bought this machine about 2 weeks ago and it was working fine until yesterday. Each time I turn on the machine it brings up the boot menu list (safe mode, Last known good config, etc.) I have selected every option on the list and all it does is reboot itself. It brings up the Windows XP load screen for about a second before it reboots again. I cannot even get to my desktop in safe mode. I am able to get to the BIOS.
As mentioned in the title, it is a dell optiplex gx150. It has a label that states it is designed for MS Windows 2000 Pro., Windows NT Workstation 4.0 and Windows 98....however, it was loaded with Windows XP Pro. It has an Intel Pentium III processor, 15GB HD, 256MB of RAM.
Any advice would be greatly appreciated. Thanks!