Blank Screen With Cursor But No Log On Screen

I've been using my laptop for a while now and had a friend install Windows 7 onto it (because i'm quite rubbish with this sort of thing) and everything has been going great until a few weeks ago.

I loaded it up one day and everything is going fine until it reaches the part where it's supposed to load the log on screen. Instead of a log on screen all i am getting is a black screen with the cursor. Now i can't give you specs to my computer or anything of the like because i simply don't have access to it but i can give as much aid as possible to help find the problem.

One of the things that happens is that when the black screen & cursor appears if i move the mouse or push any buttons the screen goes VERY dim as if i've put it into a lower power mode or i've taken out the power cable. If i push the power button to turn it off even if it's just a tap on the button the screen will go off immediatly even if the laptop is still running.


One of the green lights that i believe is showing if the hard drive is busy or not flashes during the process but after a minute or so of the black screen it'll stop flashing altogether.

I've tried all three safe modes with all the same results, F8 to system repair has given me no love with startup repair finding NOTHING wrong, memory check running through the process only for the same thing to happen and system restore has no restore points to go to.

I've looked for answers in several places and some say i have to use sticky keys to get the screen to come on but the problem is that as of last nights use i turned sticky keys off for a few minutes so i could play a game and forgot to turn them back on afterwards. I've taken a look around the net and can't find a fix to my problem. Reinstall simply is not an option under my current circumstances so i really need a favourable reply.