Windows 7: Display driver has stopped responding and has recovered-onboard video

Hi,
I came across this forum as I was looking for a solution this error, 'Display driver has stopped responding and has recovered". I was just watching a Youtube video through RealPlayer and at the same time browsing a couple of websites.
I can't recall now what exactly happened but I remember the video screen from Youtube turning green but the audio was still there. The error message appeared and then the computer stopped responding. I restarted the PC but it stopped responding after the desktop displayed. I tried restarting again but now the PC stopps after the animated windows logo was completed. I tried to rollback and update the display driver but nothing worked. I don't think the updating of the driver was even completed because the computer would not restart completely.
I can still run the computer in safe mode. Another thing I noticed is that after the computer has stopped responding, I would usually turn if off with a long press on the power button - the fans would stop, the led on the casing would turn off, the monitor's power indicator would turn yellow, however, the LED on the keyboard (the one that says "Num Lock") would remain lighted. I would have to pull out the plug or turn off the AVR to turn the light off.
I brought the unit back where I bought it for servicing but to my surprise, the computer worked just fine when the technicians turned it on. It was like nothing had happened to the computer -it went throught the normal process of booting and then to the desktop. I asked them what happened and they said it must be due to too many processes/applications that load on startup. They said they had deactivated a couple of them so they won't all load next time - but they did this after the PC had completely booted. So now I'm confused - how come the PC worked at the shop but not at home. They also suggested plugging the PC directly to the wall socket in case the AVR is lower voltage/power than what the PC needed.
I didn't install any graphics card so I'm using whatever's on the motherboard (Intel DH61wwbr).

I hope you guys can help me because I don't really know much about this.

Thanks in advance.

Take a look at this thread. http://www.sevenforums.com/1546774-post12.html
Hope this will help.
Fabe

Thanks! Will try out these diagnostic steps. Though I've tried plugging in a different monitor, keyboard and mouse...still didn't work.

FYI, I brought my PC back to the shop. After a few minutes of testing, the pc malfunctioned and they could not get it to work again. They finally decided that it could be the motherboard. They replaced my motherboard and my pc is now working.