Hey Guys! It's my first post in this awesome forum and unfortunately it's in the Troubleshooting section. I have a problem with my PC and I hope You will help me solve it. After I restart a PC there's no display. The PC goes to Windows (I can hear the Windows music) but there's only black screen on the monitor. It doesn't even show the "enter bios" screen. The LED on the monitor blinks so it's not a "no signal" kind of thing but rather "sleep mode" or something like that. There's the same issue when I go to Bios settings and then click on "save and reboot". Turning on and shutting down the PC works perfectly fine though. This problem started when I installed a new SSD to my rig (the day before yesterday) - for the past 10 months there was no problem. Reinstalling the system on my old Barracuda didn't solve the problem so I guess the SSD is not an issue here. On intergrated graphics everything works fine. It restarts correctly. What I tried to do but didn't solve the problem: * reinstalled the system (4 times) * fresh motherboard bios flashed * fresh GPU bios flashed * changed the slot on the motherboard * changed cords on my PSU * tested the memory (memtest86) * changed the external GPU as a primary GPU in bios settings * set MB to default, clear cmos I don't know what else should I do... I really need some help here, I hope You Guys will help me solve that annoying problem. Have a great day, Karol. P.S. Sorry for my English, I'm from Poland so it's not my native language SPECS: CPU: Intel i5 3570 MB: MSI Z77A G45 MEM: Corsair Vengeance LP 2x4GB GPU: Gigabyte HD 7970 OC TOP (GHz) @ 1100/1500 PSU: BeQuiet L7 630W DRIVES: Samsung 840EVO 120GB SSD, Seagate Barracuda 1TB HDD SYSTEM: Windows 7 Pro 64-bit