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HP ProDesk 400 G7 Microtower PC (9CY18AV)

Dear sir,
We have HP PRODESK - when startup , HP ICON ONLY SHOWS. NO RESPONSE FROM KEYBOARD AND MOUSE.  NO STARTUP OF WINDOWS OS. KINDLY CHECK THE SYSTEM AND RECTIFY THE PROBLEM. THE FOLLOWING DETAILS OF PC FOR YOUR REFERENCE WHICH IS UNDER WARRANTY PERIOD.  
HP ProDesk 400 G7 Microtower PC (9CY18AV)
Product55Z26PA
Serial NUMBER : [text omitted to protect user privacy]
PLEASE RECTIFY THE PROBLEM AS SOON AS POSSIBLE. THANK YOU
WITH REGARDS
j.baskaran
044-27152000 ext 415
cad lab, mechanical engg. dept.
Sri Venkateswara college of Engineering, Sriperumbudur 602 105.

BASKARAN J
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