| Problem | Possible Causes | Remedies |
| The computer does not get powered on | Bad power supply | Use another power point and check if it works |
| System problem | Call your customer support engineer | |
| "Non-system disk or disk error" | Non-bootable floppy in the A drive | Remove floppy and boot again |
| Corrupted system files | Boot from a new floppy; reinstall the OS if you know the procedure or call an engineer | |
| Virus Infection | Boot from a clean bootable diskette, scan hard disk and remove virus with anti-virus software |
Troubleshooting the System Unit