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Question

Second monitor not working correctly

Jul 27, 2017 11:40PM PDT

Hi all,

I have a HP ProBook 4740s with Windows 7 Ultimate installed. I have a separate monitor connected via hdmi. The monitor is a Samsung 24inch SyncMaster SA350. When I boot the laptop and login, the secondary monitor remains blank when I try to extend my desktop.

When I go to device manager I see two entries under 'Display adapters':
- AMD Radeon HD 7650M
- Intel(R) HD Graphics 4000



If I disable the Intel option and then go to my Display - Screen resolution settings, there is no second monitor available even if I click detect:


If I then re-enable the Intel option that I disabled just a few seconds before, my second monitor starts working and my desktop is extended across both the laptop and monitor as desired.

Checking back to Display - Screen Resolution everything appears to be fine now:


At this point my second monitor is working correctly. This happens every time I restart the laptop. I simply go into device manager, disable the Intel option under 'Display Adapters', wait a few seconds and then re-enable it and it starts working.

Any idea what's going on?

Discussion is locked

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Answer
Beats me
Jul 28, 2017 8:30AM PDT
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Answer
I bet it's a driver/bios issue.
Jul 28, 2017 8:38AM PDT

HP ProBook 4740 looks to have shipped with 7 Pro and refurbs show up with W10 Pro so my bet is whoever loaded W7 missed a driver. I see Bob B supplying a link to HP's driver page so I'd review the work on drivers there.