Wireless light orange and screen blank on HP

I have a HP probook 6555b which was making a noise and the cursor freezing, took
it to a It place, got it cleaned etc but when I started using it again the cursor froze so
I turned it off. Next day I turned it on and the wireless light is orange with the security
locks flashing a light blue colour. I have tried everything battery,power cord, pressing
different keys and it wont budge. What is the cause? Please help.