Problem: Computer turns on but no display on monitor Step by step troubleshooting & Solution: 1. Check all connections (Power cord, VGA/DVI cable) 2. Remove RAM, Clean the GOLD CONTACTS & then back it again 3. Reseat RAM on every slot & then Restart 4. Remove Video Card & try to connect to on-board VGA 5. Try another Video Gard (PCI) 6. Test power supply with higher watts ( ex. 600w) 7. Test the Monitor to other PC 8. Remove all components (ram, video card, power, hdd, cmos battery) for 15-20 minutes & then reseat 9. Reseat processor 10. Test another processor note: If all steps failed, then you might have a bad motherboard.