I have a computer Dell OptiPlex7010SFF
Core i5-3570 3.4GHz Win10Pro 64bit HD Graphics 2500
However, when UHD (3840x2160) monitor is connected to DP, it does not catch signal
How should I solve this problem?
Can I use a UHD monitor on HD2500?
Maximum Display Resolution
DisplayPort* 2560 x 1600, HDMI*, VGA
DisplayPort* with HDCP
source: https://software.intel.com/en-us/articles/3rd-gen-hd-graphics-quick-reference-guide 3rd Gen HD Graphics Quick Reference Guide | Intel® Software
Check the manual if your monitor is backwards compatible with DisplayPort 1.1
At least it should offer lower resolutions.