First of all, I would like to apologize for any possible grammar mistakes, as English is not my native language.
I am the proud owner of two DELL products, both purchased via resellers:
An ALIENWARE X51 R1
A P2715Q Monitor
I bought the X51 in 2012 and had it connected with a SAMSUNG 226BW monitor till last summer (2017). The configuration worked flawlessly with no issues at all at any level.
Since my X51 already had a 330W power supply , last year I decided to upgrade the X51 with a GEFORCE GTX 1060 (Founder’s Edition) card. At that time, I decided to invest in a brand new monitor and thus I purchased a DELL P2715Q. For seven months this configuration worked perfectly with no issues, making me a very happy DELL customer.
And suddenly, out of nowhere, a problem appeared last week. When I turn the X51 and the monitor on, the latter goes immediately into power save mode and does not ‘wake up’ at all. Since then I am unable to use my computer.
Both X51 and P2715Q are connected to a UPS (ACC)
Monitor DELL P2715Q:
Warranty valid till March 2019
Monitor Driver used: Dell 184.108.40.206. (19.01.2015)
Connection: DP (out) – mDP (in)
Cable used: Dell Default
Resolution currently used: 2560x1440
Alienware X51 R1:
WINDOWS 7, Home Edition, 64bit
Power Plan: High performance - Power Save Disabled
GEFORCE GTX 1060 FE:
DisplayPort 1.2 Certified, DisplayPort 1.3/1.4 Ready
HDMI3: Support for HDMI includes 4K resolution at 60 Hz, GPU-accelerated Blu-ray 3D support, x.v.Color, HDMI Deep Color, and 7.1 digital surround sound.
Dual-link DVI: Drive flat-panel displays up to 2560x1600 resolution over a DVI connector.
NVIDIA Driver used: 391.24
DP used: Top left
WHAT I HAVE TRIED SO FAR:
I connected the monitor with the X51 via an HDMI cable (Monster 700HD), with no success – the problem remained.
I connected the X51 with a SAMSUNG monitor via their DVI ports. When I turned both on, the configuration worked only the first time – when I rebooted the computer, the screen went black with the display entering power save mode.
I didn’t turn the system on for a couple of days and then turned it on - it worked properly, but when I rebooted, the same problem appeared.
I turned the system on after having it off for a few days - it worked. I left it working continuously for five days (I didn’t turn it off or put it in sleep mode at all, I just activated a screen saver). During these days, I used the system for quite heavy gaming – everything (X51 & P2715Q) worked perfectly all that time with no issues. The sixth day I rebooted and the problem appeared again.
I tried unplugging the power supply of the monitor and then re-plug after 30sec, but it didn’t work.
I tried the other two DP of the card, but the same problem persisted.
I suspect that at a ‘basic’ hardware level both devices are ok, but something has interfered in their connectivity and causes the issue.
I am at a loss here, I would greatly appreciate any help, as I cannot use my system properly (I just can’t leave it working continuously….).