Hp laptop no signal

MY CPU and my desktop we're working earlier today.. The problem I have is that, after I had moved my cpu to another room due to the lack of space we had in the previous room... My cpu's desktop just says d-sub no signal while everything else is working perfectfly... Please help I really need my cpu and with all these problems im having im unable o complete some assignments
Any help will be muc appreciated

Hello,

Please help me as I am unable to install Web Cam of HP Pro Book 4420s laptop. Though I check the web cam driver has already installed still I am unable to find web cam. OS is Win 7 Ultimate

With thanks
Santosh
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Configuration: Windows 7 / Firefox 3.6.12

Hello, I'm in need of help of my LG monitor it keeps saying D- Sub, power saving mode? how do I get out of power saving mode?



System Configuration: Android / Chrome 59.0.3071.125

Hello,
Few days back i shifted my pc from my room ta another no it is not properly working it says available in dsub signal only can you give any solution to solve this


System Configuration: Android / Chrome 57.0.2987.108

Hello,
I am trying to connect my laptop to a monitor. The monitor worked fine with a pc when I last used it, a while ago. I have recently used the same laptop with another monitor, and that worked fine. But those two together... the best I managed was to get the monitor to show me the laptop's desktop for 2 seconds before going back to safe mode. Any idea what's going on??
Thanks in advance!