Hp — not started only repeated beep sound comes

Address:

832102

Desk top computer hp slimline 270 - p033in
Serial no cnv71505gv
Product no z8f07aa#acj
The product is not started only beep sound comes. Customer care unresponsive. The technician confirmed that he will be arriving within schedule warranty which lapsed on 15 aug 2018. Though twice he visited but the issue remained unresolved.
My address is d-10 ucil colony jaduguda (Near jamshedpur) po jaduguda mines east singhbhum, jharkhand-832102
Mailed: [protected]@rediffmail.com
Mobile: 91-[protected]
Phone no[protected]