windows 7 boots to black screen with white cursor

i have a toshiba satelite laptop that when turned on boots to a black screen with a white cursor that i can move around with no problem, but thats about it. when it first starts you get the toshiba page, followed by the windows logo, then the black screen.....unfortunately when i purchased the laptop it didnt come with an installation nor a recovery disk.....these are the things that ive tried so far;

turned the laptop on and while booting i've repeatedly hit f8, which brings me to page with a few options, the first one being repair computer....once i hit that option the computer starts to boot up again and brings me back to the black screen with the white cursor...basically any option i try safe mode, safe mode with networking etc. etc. basically starts the reboot process and brings me back to the black screen

once the pc has booted and im staring at the black screen with the white cursor ive tried pressing ctrl+alt+delete to bring up the task manager to no avail.....

basically all the computer is capable of doing right now is booting to that darn black screen with the white cursor....any help would greatly be appreciated...

 

ok as per your instructions i downloaded Farbar Recovery Scan Tool 64-Bit (my laptop is running 64 bit) and copied it onto my flashdrive, i plugged the flashdrive into the laptop and restarted it, as soon as the BIOS loaded i repeatedly tapped on f8 until the advanced boot options appeared...i selected repair your computer....upon doing so "loading windows files" appears at the bottom of the screen, followed by the windows logo(for like a quick second) the im back to a black screen with the white cursor..

 

tried the second method as per the directions using the windows installation disc that i created, made sure laptop boots from cd.....this time it did something different(thought i had made progress) after i got the indication to press any key to boot from cd, got windows is loading files at the bottom of the screen, starting windows with the logo above the words was displayed(hadnt done that before) only to go back to the black screen with the white cursor....you made a reference before to "infected pc" is it a virus causing this?

 

Might also want to test the RAM with Memtest86+

Version 4.20 for Windows direct download links:

• ISO for CD
  
  
• For USB Key

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ok,,,,to do a hard drive diagnostic or do a ram test dont i have to be able to log in to my computer to run the programs.....which is part of the problem....computer wont do anything but the black screen, cant login using safe mode, wont run any of the recovery options....

 

The computer does not need to be able to run Windows to run most hard drive and memory diagnostics. The CD disc or USB flash drive that you create will be self-booting.

 

tried running a hard drive diagnostic using the diagnostic tool for a toshiba hard drive as well as performing a ram test using memtest86+ but my laptop will not boot to either ...tried using a disc and usb....the only thing that has remained constant is the black screen with the white cursor after loading windows files appears at the bottom of the screen

 

if im looking at it right yes....after turning the laptop on i hit f2, under the main tab it shows:
cpu type: amd e-240 processor
cpu speed: 1.50 ghz
hdd/ssd: toshiba mk2565gsxn(s1)

although im really starting to wonder if its really the hard drive going flaky...now within the last hour every time i try to power up the laptop im getting:
" check cable connection!
pxe-mof:existing intel pxe rom.
No bootable device--insert boot disk and press any key "

this was not my initial issue, the black screen with the cursor was

 

Yep, it definitely sounds like the hard drive is failing (has failed).

That "pxe" means the computer was trying to boot from the network. This happens when the computer cannot find anything locally attached to the computer that has a bootable operating system on it.

When the hard drive and/or operating system is so damaged that the computer can't boot from it, it will try to boot from the network next. And when that also fails, it has no choice but to display an error message and stop.

Solution: Replace the hard drive.

 

ok if i replace the hard drive will i need to get(buy)a whole new windows os or can i transfer it over from the old hard drive.....dont care much about the files on the old hard drive but buying a new o/s would **** and probably cheaper buying a whole new laptop

 

You can download the ISO file for the version of Windows 7 you own:

• Windows Home Premium SP1 (English, 64-bit)
• Windows Professional SP1 (English, 64-bit)
• Windows Ultimate SP1 (English, 64-bit)
• Windows Home Premium SP1 (English, 32-bit)
• Windows Professional SP1 (English, 32-bit)
• Windows Ultimate SP1 (English, 32-bit)

The above links point to Digital River, a licensed distributor of Microsoft software. These downloads are each over 3GB, and your current Product Key will only work with your edition of Windows, so make sure to select the right one. (Typically your Windows Product Key is a 25-character alphanumeric string that is printed on a sticker affixed to your PC or on documentation included with your PC. You must have it to reinstall Windows).

Also download the Windows 7 USB/DVD download tool to help you burn your Windows 7 ISO file to a DVD or USB flash drive. Whether you choose DVD or USB makes no difference; just confirm that your PC can boot to the media type you select.

Once that's done, boot your computer using your new Windows 7 DVD or USB flash drive and follow the prompts to install Windows 7.