Hello there,
Here are the following colleges in North India that offer CSE without JEE MAINS AND ADVANCE RANKING:
1. BITS
exam: BITSAT
2. NSIT DELHI
exam: NSIT ( university level admission test)
3. LPU
exam: LPUNEST
4. MANIPAL INSTITUTE OF TECH.
exam : MU-OET
5. AMITY UNIVERSITY
exam: based on 12th marks (pcm)
6. Chandigarh University
exam: CU-CET(I/II/III: phase wise exams)

7. KALINGA INSTITUTE
exam: KIITEE
There are many state level entrance exams as well through which you can get admission in b.tech in the colleges of that state .

Thank you and all the best