The monitor goes into power save mode if it doesn't receive a signal. Did you install the drivers for the new graphic card?
I just upgraded to a Sapphire Nitro+ RX580 8gb card, but the installation isn't going so smooth. I built this PC about 7 years ago, so some parts are starting to show their age, and I figured it'd be time for an update.
The problem is, when I plug the power cables (a 6 pin port and an 8 pin port that I'm using a 6+2 cable for) into the GPU, it causes my monitor to boot into power save mode when I turn the computer on. It doesn't seem to have a problem with the card being plugged into the motherboard, so long as the power cables aren't plugged in.
I'm wondering if it's a compatibility issue? My specs are here:
Processor: Intel Core i5-3570K CPU @ 3.40 GHz 3.80 GHz
8 GB of RAM (7.90 GB usable)
Motherboard: Gigabyte GA-Z77-DS3H
Would any of these be incompatible with my new graphics card? I don't have the PSU model right now, but I can find it if anyone thinks that could be the issue. I know it's at least 600W though.
Anything you can offer would be great. Thank you!