Computers broken....help

Sounds like its your HDD check the cables are seated correctly and haven't been knocked loose

You do the hoovering, next time

In the worst case, the hoovering created static (if on carpet) and boomed the pc.
But that to me is almost impossible as the case is protecting the interior.
Sounds to me that you might have a faulty hard drive. Try a new hard drive instead?
Try the cables. My harddrive was slow, till I took it back out and installed the cables again :D.
Rest assured, if you can reach the Black startup screen, that is, the bit where you can go setup and overclock and stuff, most of your components are fine

yes go in safe mode..do i risk nomral boot up?

i tried the cables and it worked...will report back in a sec

It is probably worth running a Hard drive check,

click 'my computer'
right click on your hard dive (Normally :C drive)
click properties
click the tool tab
click 'run now' on the error checking tab
tick both boxes (fix errors & recover bad sectors)
click ok
You will then be asked to reboot and your computer will then scan your hard drive for errors.

Hope this help!

Cant now. I just restared my computer and it stil lwont boot up after 10 seconds. The beep on start up now last like a second when last time it was a split second

Check your ram is seated correctly

If you can get into a command prompt "C:\>" in safe mode (normally) by pressing F8 on start up:

Starting System Restore Tool from Command Prompt:

1.. Start your computer to Safe Mode with Command Prompt. NOTE: You must log on as the administrator or a user that has administrator rights.

2.. At the command prompt, type %systemroot%-system32-restore-rstrui.exe, and then press ENTER.

3.. Follow the instructions on the screen to begin restoring your computer to a previous, functional state.

If you can't get into safe mode, get into your bios (del on startup). Set your computer to boot from CD first.
Put your windows cd in and boot your machine
(a) choose the first repair option and you should go to the command prompt where you can attempt the above.
or
(b) don't choose the first repair module option but chose the second "repair" where Windows offers to install or repair your current windows. You should be able to sit back while windows repairs your current windows with all your stuff intact. Don't choose a new windows install or you could loose everything.

yeh def. sounds like a hard drive issue - i had the same problem with mine previously, have replaced it finally and its working now

before going out and buying a new hard drive you should just try a clean operating system install on old hard drive and see if it runs ok after that

will do this now as i have go into windows noramlly!!!!

right...it seems to be fine...and its not slow!!! hopefully it will be ok from now

It is worth defraging your disc as well if it hasn't been done for a while ,follow my last instructions but click the defragment tab instead of the error checking tab, Or open the program option which comes up when you click the windows icon (bottom left corner), click accessories, click system tools, click defragment.
it will take a while but should make a big difference to the speed once done!

i would back any important files up. sounds like your hard drive is on its way out. Mines did this, and occasionally worked for short periods of time until it finally died completely