My oppo neo 7 can't boot into recovery mode

[Android Central Question]

When i try to boot into it..... My phone will vibrate and 'oppo' logo will appear and it reboot and not reboot into recovery mode.....it start when i install TWRP in my phone...it work fine.....I install root with update.....and i install oppo tools and accidently press uninstall root button.....now my supersu app say 'root undetected' and TWRP can't work fine anymore....now ican't boot into recovery and can't root my phone anymore....HOPE YOU GUYS CAN HELP ME