I Just would like to share the solution for HD 4400 with 10.10.2
Just add the below patches to clover.
<key>KextsToPatch</key>
<array> <dict> <key>Comment</key> <string>HD4400_Full_Qe/CI_ 1</string> <key>Find</key> <data> hoASBA== </data> <key>Name</key> <string>AppleIntelFramebufferAzul</string> <key>Replace</key> <data> hoAWCg== </data> </dict> <dict> <key>Comment</key> <string>HD4400_Full_Qe/CI_ 2</string> <key>Find</key> <data> hoASBA== </data> <key>Name</key> <string>AppleIntelHD5000Graphics</string> <key>Replace</key> <data> hoAWCg== </data> </dict> </array> </dict>