Looks like it's broken, although it could be the motherboard also. Take it out, put in in an external enclosure and see if you can get any data off it. That's a start.
But I expect a rather long path to a working laptop again.
I have just upgraded (?) my Compaq CQ58 to windows 10 and yesterday it went haywire and the speakers and mic wailed loudly with feedback. When I started up it wont boot and goes into a continuous boot loop.. there is a blue screen with sad face and
I cannot access system restore via F11 but have managed F2 System checks - System Quick Test passes all except the HARD DRIVE SHORT DST CHECK FAILED and When I attempt the Extensive test this has the same result after a couple of minutes - (above response plus SYSTEM EXTENSIVE TEST : FAILED. I have attempted to access system restore from the back up discs putting the disc drive as boot option - the drive goes into action though doesnt read anything off the disc.. I am thinking that the Hard Drive is dead after the upgrade (all worked fine pre-W10)...Is there anything else to try? Is a new Hard drive the only answer? Is there anything I can do to recover the data on the laptop at all? Any help/Advice welcome!! Thx