Black screen at startup

Hi there, I developed a problem with my desktop pc yesterday. I was gaming and the screen began to flicker then the game crashed - citing "rendering device lost". I tried to re-load this again and the same thing happened again, this time with a BSOD. I tried a different game and the same thing...

... after 15 minutes of hanging in that weird startup screen, considering whether to hard reboot or not, it went into start repair (still there now)... To make a long story short, I suspected something wrong with my hard drive due to a software giving me an i/o error, after some research (I am...

Upon booting my computer, I'm presented with the option to go into startup repair, or start normally. If I start normally, it loads the logo, but before it gets to the login screen, it crashes to the boot screen. If I select the startup repair option, it shows a loading bar, which completes, but...

I'm using I have a DELL4500S desktop, on startup it will not go to the login screen, the screen is just black with the cursor showing. I've tried restarting the computer, unplugging everything and restarting it. Nothing is working. When it first starts a pop up shows and says "This Application...

I installed windows 7 a few days ago, everything seemed to run fine until this morning.. Last night i updated windows because some updates where finished, during shutdown the update was installed. This morning i turn on my computer, it beeps once(loud beep not a soft beep) The screen doesnt flicker...