This is a frustrating half-working situation.
Was doing this:
display card HDMI port --> HDMI-to-HDMI cable --> U2515H HDMI port
This set up worked in Windows 7, with resolution 2560x1440 attained.
However, when doing a reboot of the machine, the monitor went black and cannot show the BIOS POST screen (those text that showed how much RAM you have, what HD are detected etc). More, there was an error message on screen, saying:
"The current input timing is not supported by the monitor display. Please change your input timing to 2560x1440, 60Hz, or any other monitor listed timing as per the monitor specifications"
The blank screen and error message persisted until Windows loaded to the login screen. That means I can't even see the Windows logo, or the safe mode selection screen if I press F8.
So there was no way for me to go into BIOS to change any setting, or do a safe boot.
Tried to use a DVI-HDMI converter, and also a DVI-HDMI cable to make use of the DVI port of my video card. Still same error as above. Worse, this set up did not work in Windows 7, giving me a blank screen.
I am sure the DVI port on my video card is working, cos it can work with my old Samsung monitor. Inspired by this, the following steps, to be followed exactly, can force the U2515H to show the BIOS screen:
1. Shut down and power down the computer.
2. video card DVI port --> DVI-to-DVI cable --> old Samsung monitor DVI port
3. Power up the computer. The POST screen will show on the Samsung monitor.
4. Go into the BIOS screen by pressing DEL.
5. Unplug the DVI-to-DVI cable from video card DVI port.
6. video card DVI port --> DVI-to-HDMI cable --> U2515H HDMI port
The thing is, if I have to keep the old monitor, why bother to buy the new Dell U2515H?
So, how can I get the U2515H to accept signal from my video card during the POST screen and booting phase, without going through such tedious steps each time? Thanks in advance!
Hardware:
mother board: Asus P5K-E Wifi (latest BIOS)
video card: Galaxy 8800GT (DVI, HDMI)
