I am unable to turn my computer on. There is absolutely nothing happening When I turn on the computer (by pressing in a button), the monitor will react with a green light on for 2 seconds and then the green light is off. No lights to indicate the computer of disk drive are on.
I recently had a problem turning on my XPS 200. Then I fixed it by placing my right index finger in the slot and behind the on/off button. Then used my left index finger to push the on/off button from the front. Pushing the button from the front against the finger from behind created enough pressure to turn the machine on. Sometimes I have to push the button from behind to the front and vice-versa to get the computer to turn on. It's a lot more work, but will have to do until I get a new hard drive, preferably not Dell. The hard drive is making a lot of noise and recently a CD got stuck in the CD slot and wouldn't come out until I rebooted.
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Try connecting the monitor to a friend's computer. If you get some sort of a display it's not the problem. When you say that the computer makes a new noise like the fans are spinning fast, you might have an issue with the video card , motherboard, or power supply.
You can be doubly sure that the PSU is ok by checking inside the case for LED lights on the motherboard, or by getting a cheap PSU tester from ebay or Maplins.
Seems silly but use the PC power cord in the monitor to make sure the cord works.
Finally if the PSU does work and there isnt a problem with the cord then you have a motherboard issue, it could be a MOSFET IC that needs replacing, either way its a delicate and specialist fix that will need to be undertaken by a service center. If you do go down this route make sure you use a 'no-fix no-fee' service.
most surge protectors have some sort of on/off switch and a reset button. If there was a surge then you would need to pres the reset button to get the surge protector to function again. If there was no surge then try using the on/off switch on the surge protector to see if that helps. Also try simply unplugging the power cord from the back of the desktop while the computer is turned off. This will sometime also help.
I have an HP that does close to the same thing. Mine goes into a 'Perm-Sleep' mode that I can't seem to pull it out of. I have to remove the battery, then unplug the power adapter, not in that order. Leaving it in this condition for about a minute so that all the power stored in the RAM goes away. This is the same as holding the power button down for 10 to 15 seconds until it completly turns off, sometimes referred to as a 'Cold Boot.'
Once I have powered it down I have to go into the control panel and select the power settings and make sure that hibernate is not an option. If you close the lid on the laptop and the systems goes into a sleep state, it may be configured to go to hibernate after, say an hour or when the battery gets close to being drained. My computer does not like to come out of hibernate and I have to Cold Boot it, so I just don't let it go into a hibernation in the first place anymore.
try to remove all external device connected to your computer. just leave the keyboad, mouse and monitor connected.
if still a blank screen
remove everything connected to your computer (mouse kyeboard and monitor) restart if nothing happens
open your computer and remove all devices (hard drive, optical drives, memory... restart,,, you should be hearing beeping sounds indicating motherboard is looking for memory. try putting back 1 memory at a time and checking all mem slot. to identify if one of the memory could be causing the blank screen. if both memory will not work try to use known good working memory. if you dont get to hear the beeping sound using a known good working memory. your memory is the problem.
give me more info