My old crappy laptop broke. Someone gave me this old not as bad Lenovo Edge Thinkpad with I5-M560, Intel HD Graphics.
Restored laptop with factory Windows 7. During a day of security updates, the Samsung TV was working via HDMI cable. After the security updates, I installed a couple of apps. While this was going on, I decided to move the HDMI cable a bit on the desk, and the monitor became "No Signal". I have not been able to get it working again.
Screen Resolution Window says "SyncMaster" and monitor shows "No Signal", so some detection on both ends is there. Only unusual thing is if I hit "Detect" - a third box appears saying "Another display not detected".
The "Device Manager" --> "Monitors" just indicates "Generic PnP Monitor" (and the LCD 1366x768 laptop monitor).
My co-worker wrote:
I've heard numerous problems with connecting video output things to Windows laptops over the years. I think the problem is that it tries to save profiles of things you typically do so when you plug something in again it knows what to do. At that, I suspect you often have Windows v. Intel (integrated graphics) v. NVIDIA (discrete graphics) v. Lenovo/HP (proprietary Windows stuff) all trying to do that same things (save profiles) and fighting with each other.
Any ideas on how to fix this?