My hp w220h monitor just blinks on when i start my computer then goes blank,if i turn the moniter off and then back on it will blink on agoin for 3 seconds then go blank again as many times as i turn

SOURCE: Monitor using 100% cpu and on the blink

Video card is plugged via DVI cable? If the board in the flat panel is going bad ( main signal pcb) video card can be going up and down scale to control its sync with no luck, causing the CPU useage problem.Only ever seen this once. Normally, the monitor will not cause and performance issues other than you cannot see anything.

SOURCE: monitor willnot come out of sleep mode

turn off everything and restart computer in safe mode,do this by holding down f8 as you reboot,then go in your setting and remove time limit on sleep mode.

SOURCE: Screen comes on briefly then blanks out.

check inverter, memory, and powersupply.

SOURCE: blank HP w1907

If the power light does not turn color and stay's green on startup, it is not a power problem. It is most likely the inverter. If the unit is in warranty, send it out ASAP. Contact HP customer care by email and have the issue logged in.
If in warranty, they will send you a box by FedX second day and have repaired.
This is a 19" monitor and will not be worth paying for repairs if not in warranty.

Testimonial: "I am very happy that this guru was able to concisely evaluate the problem from the information provided. "

SOURCE: HP vs19e Computer turns on Monitor stays Black. blue light blinks

Easy step-by-step tutorial for replacing the caps in this monitor can be found at the link below:

http://boredprojects.blogspot.com/2009/09/hpvs19e-monitor-fix.html