Black Screen w/Cursor; HP bios refuses to find or rollback

So, after having recently finished moving my backed up music and work over to my new computer, it of course decides to do this to me. The black screen appears in either safe or normal mode. As it stands, I've still got my previous computer holding on by a few spare threads, so it's not the end of the world, although I'd really prefer not to have to move everything over again. I notice no disks came with the computer, which made doing a fresh format somewhat problematic, and now limits my options somewhat - I think.

Do I even need to restore it/flash a new bios? Any help or suggestions would be much appreciated, as well as an idea of what might be causing this and why. I'll probably have a itsy-bitsy-teeny-weeny thumbdrive of DS Linux for fooling around with in a few minutes. Again, any advice = much appreciated. Thanks!

Aw, right - computer is HP Pavillion dv7t quad, thread in which is acquired is here. Thank you.

 

If it were me I would first try swapping hard drives old to new new to old access the back up on the new drive on the old puter. The result will determine the fix. If the old hard drive boots w/screen it is probably a setting or driver.
if it does not then possible a hardware problem. JMO

Edit this will sound stupid but did you try an external monitor, yes I know the mouse pointer is there.

dv7 4295 quad here

 

No such thing as stupid advice! Anyway, I wasn't too clear on the whole thing of hard drives; the hard drives from my old Alienware are too small to fit without a drive docket in the new computer; that being said, this is a good plan, so maybe I'll just pick one of those up. And your suggestion is actually pretty good - if it somehow decided there are two monitors... Well, anyway. I'm gonna try that now. Wish me luck! And thanks!

 

the new harddrive should have a drive partition with restore disks on it if you are able to boot that drive in your old puter you can burn new disks or transfer to usb drive or get a usb to sata drive adapter I have one and it is great for testing hd's and data recovery about 15 bucks. the monitor thing connect a second monitor via vga or hdmi and see if it displays. remove the drive docket from one hard drive and install it on the other I assume the drives are the same size


good luck I know I didn't put alot of info her cause it would take to long to type. google it and you should find a guide to help you. If you have questions you can always pm me.