I have a HP dc7100 tower and a 1530 monitor, i've recently moved and had to re-hook everything back up, in doing this the cpu comes on but the screen is blank it just says "going to sleep" so I am not able to do anything with the computer, the mouse does not activate anything or the keyboard, what is wrong and what can I do to get it back up and running, again, I can not see what's going on on the screen. Thanx for any help.
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Your desktop tower/cpu tower has to be turned on to give those hardware power. If you can't turn on your computer then that means you have an internal problem with your motherboard etc. If everything else powers up except for the screen/monitor your video is dead. Find someone you know that has an extra monitor and hook it up to your tower, if it works then it's not your video but the monitor instead.
boot your computer in safe mode and in display properties>Screensaver>Power tab>Advance>
"When i press the power botton on my computer " select "do nothing" and " when i press the sleep botton on my computer " select "do nothing"......
then press ok and apply then restart your computer in normal mode it will work