I have my Dell Inspiron 5548 for almost 3 years now and I tried for almost 2 years to find a solution for this by myself - but didn't found any!
I found that the screen color -Blue- is very much over saturated when graphic driver is enabled compared to when the graphic driver is disabled... it is happen on the laptop monitor and also on other monitors and TV's connected to it through HDMI.
The problem is that the colors are changing when driver is installed - especially when it comes to primary color Blue, the color is very much Purple look. With Graphic driver enabled (also tried with older versions of Intel graphic drivers installed - same result) The normal Blue has become "Purplish".
Hardware / Software - adjustment/testing:
Thanks for posting.
Please try running the diagnostics, and if the system passes, then it is performing to specifications. You can try updating the BIOS and video drivers, and if the issue still persists, then contact Tech Support in your country for further troubleshooting.