Facing BSOD (Page Fault Non Page Area/Clock Interrupt Not Recd) + Hangs

i have an intel i5 2400 cpu, combined with 4gb ddr3 memory. mobo is dh67bl - revision 3. no gpu installed.power supply is via corsair vx450.problem i been facing:

1) bsod saying that a clock interrupt wasnt recd. [url]

2) bsod saying: page fault in non paging area. couldnt grab a screenshot for this.

3) display randomly goes off for a split second and reappears.. but the color of the panes go blue (i havent chosen blue. my setting is for clear pane.)[url] this error solves itself after random number of hours/mins

4) display vanishes for a split second and reappears, and a small balloon at the bottom right corner prompts that the display driver had stopped working.

5) system plain hangs/stops responding. randomly happens.. but more so while on Internet, or after hrs of it idling, i come back to the comp and try to scroll the content onscreen.sometime it revives from the stuck state as if nothing happened, sometimes i have to give it a cold boot.

6) while reading forums with blue bands.. the blue bands kinda form blurry bars which stretch till the end of the screen. i tried to grab a screenshot but the screenshots were clean. the bands moved as i dragged the image about.

7) also, my comp's display went off one day and within a second came back with a blue-ish hue. it restored itself but again has gone back to blue-ish.

other relevant information:

windows 7 x64
no other os resides/installed on system
full retail version
os was installed in july.